Merge pull request #10524 from TwoD/arch

Added installation instructions for Arch Linux.

docsite/rst/intro_installation.rst

@@ -267,6 +267,24 @@ Ansible is available for Solaris as `SysV package from OpenCSW <https://www.open
     # pkgadd -d http://get.opencsw.org/now
     # /opt/csw/bin/pkgutil -i ansible
 
+.. _from_pacman:
+
+Latest Releases Via Pacman (Arch Linux)
++++++++++++++++++++++++++++++++++++++++
+
+Ansible is available in the Community repository::
+
+    $ pacman -S ansible
+
+The AUR has a PKGBUILD for pulling directly from Github called `ansible-git <https://aur.archlinux.org/packages/ansible-git>`_.
+
+Also see the `Ansible <https://wiki.archlinux.org/index.php/Ansible>`_ page on the ArchWiki.
+
+.. note::
+
+   If you have Python 3 as a default Python slot on your Arch nodes (default setting), then you
+   must set ``ansible_python_interpreter = /usr/bin/python2`` in your group or inventory variables.
+
 .. _from_pip:
 
 Latest Releases Via Pip