some doc additions and cleanups

docs/concepts.rst

@@ -6,7 +6,7 @@ It is generally quite easy to get in to the mind-set of using PyFilesystem inter
 Sandboxing
 ----------
 
-FS objects are not permitted to work with any files / directories outside of the Filesystem they represent. If you attempt to open a file or directory outside the root of the FS (by using "../" in the path, you will get a ValueError).
+FS objects are not permitted to work with any files / directories outside of the Filesystem they represent. If you attempt to open a file or directory outside the root of the FS (e.g. by using "../" in the path) you will get a ValueError.
 
 There is no concept of a current working directory in PyFilesystem, since it is a common source of bugs and not all filesytems even have such a notion. If you want to work with a sub-directory of a FS object, you can use the `opendir` method which returns another FS object representing the sub-directory.
 
@@ -55,6 +55,8 @@ When working with paths in FS objects, keep in mind the following:
  
 Note that paths used by the FS interface will use this format, but the constructor or additional methods may not. Notably the ``osfs.OSFS`` constructor which requires an OS path -- the format of which can be platform-dependant.
 
+There are many helpful functions for working with paths in the :mod:`fs.path` module.
+
 System Paths
 ++++++++++++
 
@@ -72,7 +74,7 @@ Not all FS implementation will map to a valid system path (e.g. the FTP FS objec
 Errors
 ------
 
-PyFilesystem converts all exceptions to a common type, so that you need only write your exception handling code once. For example, if you try to open a file that doesn't exist, PyFilesystem will throw a ``fs.errors.ResourceNotFoundError`` regardless of wether the filesystem is local, on a ftp server or in a zip file::
+PyFilesystem converts all exceptions to a common type, so that you need only write your exception handling code once. For example, if you try to open a file that doesn't exist, PyFilesystem will throw a ``fs.errors.ResourceNotFoundError`` regardless of whether the filesystem is local, on a ftp server or in a zip file::
 
 	>>> from fs.osfs import OSFS
 	>>> root_fs = OSFS('/')

docs/index.rst

@@ -21,6 +21,7 @@ Guide
    filesystems.rst
    contrib.rst
    expose.rst
+   utilities.rst
    
 Code Documentation
 ------------------

docs/interface.rst

@@ -5,9 +5,9 @@ It requires a relatively small number of methods to implement a working FS objec
 
 If you are looking to implement a working FS object, derive a class from fs.base.FS and implement the essential methods (below). Be sure to convert all exceptions to instances of :class:`fs.errors.FSError`.
 
-It may also be worthwhile implementing some of the non-essential methods, as the default implementations may not be optimal. For example, the method :meth:`fs.base.FS.move` is implemeneted as a file copy followed by a delete, but may filesystems can move a file without copying data.
+It may also be worthwhile implementing some of the non-essential methods, as the default implementations may not be optimal. For example, the method :meth:`fs.base.FS.move` is implemeneted as a file copy followed by a delete, but many filesystems can move a file without copying data.
 
-If the filesystem you are implementing maps path to the native filesystem, be sure to implement `getsyspath`. Doing so will improve performance, especialy when copying / moving files between FS objects.
+If the filesystem you are implementing maps paths to the native filesystem, be sure to implement `getsyspath`. Doing so will improve performance, especialy when copying / moving files between FS objects.
 
 Essential Methods
 -----------------
@@ -35,8 +35,14 @@ The following methods have default implementations in fs.base.FS and aren't requ
     * :meth:`~fs.base.FS.desc` Return a short destriptive text regarding a path
     * :meth:`~fs.base.FS.exists` Check whether a path exists as file or directory    
     * :meth:`~fs.base.FS.listdirinfo` Get a directory listing along with the info dict for each entry
+    * :meth:`~fs.base.FS.ilistdir` Generator version of the listdir method
+    * :meth:`~fs.base.FS.ilistdirinfo` Generator version of the listdirinfo method
     * :meth:`~fs.base.FS.getsyspath` Get a file's name in the local filesystem, if possible
     * :meth:`~fs.base.FS.hassyspath` Check if a path maps to a system path (recognised by the OS)
+    * :meth:`~fs.base.FS.getpathurl` Get an external URL at which the given file can be accessed, if possible
+    * :meth:`~fs.base.FS.haspathurl` Check if a path maps to an external URL
+    * :meth:`~fs.base.FS.getmeta` Get the value of a filesystem meta value, if it exists
+    * :meth:`~fs.base.FS.hasmeta` Check if a filesystem meta value exists
     * :meth:`~fs.base.FS.move` Move a file to a new location        
     * :meth:`~fs.base.FS.movedir` Recursively move a directory to a new location
     * :meth:`~fs.base.FS.opendir` Opens a directory and returns an FS object that represents it
@@ -47,10 +53,11 @@ The following methods have default implementations in fs.base.FS and aren't requ
 Utility Methods
 ---------------
 
-The following members have implementations in fs.base.FS but will probably never require a non-default implementation, although there is nothing to prevent a derived class from implementing these:
+The following members have implementations in fs.base.FS and will probably never require a non-default implementation, although there is nothing to prevent a derived class from implementing these:
 
     * :meth:`~fs.base.FS.createfile` Create a file with data
     * :meth:`~fs.base.FS.getcontents` Returns the contents of a file as a string
+    * :meth:`~fs.base.FS.setcontents` Sets the contents of a file as a string or file-like object
     * :meth:`~fs.base.FS.getsize` Returns the number of bytes used for a given file or directory
     * :meth:`~fs.base.FS.isdirempty` Checks if a directory contains no files
     * :meth:`~fs.base.FS.makeopendir` Creates a directroy (if it exists) and returns an FS object for that directory

fs/base.py

 #!/usr/bin/env python
 """
-
-  fs.base:  base class defining the FS abstraction.
+fs.base
+=======
 
 This module defines the most basic filesystem abstraction, the FS class.
 Instances of FS represent a filesystem containing files and directories
@@ -139,7 +139,6 @@ class FS(object):
 
     An instance of a class derived from FS is an abstraction on some kind
     of filesytem, such as the OS filesystem or a zip file.
-
     """
     
     _meta = {}

fs/contrib/tahoefs/__init__.py

 '''
+fs.contrib.tahoefs
+==================
+
+
 Example (it will use publicly available, but slow-as-hell Tahoe-LAFS cloud):
 
     from fs.contrib.tahoefs import TahoeFS, Connection

fs/errors.py

 """
 Defines the Exception classes thrown by PyFilesystem objects. Exceptions relating
-to the underling filesystem are translated in to one of the following Exceptions.
+to the underlying filesystem are translated in to one of the following Exceptions.
 Exceptions that relate to a path store that path in `self.path`.
 
 All Exception classes are derived from `FSError` which can be used as a

fs/remote.py

 """
-
 fs.remote
 =========