Merge pull request #602 from edx/e0d/one-step

adding a one step install script

util/install/vagrant.sh

+##
+## Installs the pre-requisites for running edX on a single Ubuntu 12.04
+## instance.  This script is provided as a convenience and any of these
+## steps could be executed manually.  
+## 
+## Note that this script requires that you have the ability to run 
+## commands as root via sudo.  Caveat Emptor!
+##
+
+##
+## Sanity check
+##
+if [[ ! "$(lsb_release -d | cut -f2)" =~ $'Ubuntu 12.04' ]]; then
+   echo "This script is only know to work on Ubuntu 12.04, exiting...";
+   exit;
+fi
+
+##
+## Install system pre-requisites
+##
+sudo apt-get install -y python-pip python-apt git-core build-essential python-dev libxml2-dev libxslt-dev curl
+sudo apt-get install -y software-properties-common python-software-properties
+sudo apt-get install -y python-pip python-dev build-essential
+wget https://bitbucket.org/pypa/setuptools/raw/0.8/ez_setup.py -O - | sudo python
+sudo pip install --upgrade pip
+sudo pip install --upgrade virtualenv
+
+##
+## Clone the configuration repository and run Ansible
+##
+cd /var/tmp
+git clone https://github.com/edx/configuration
+
+##
+## Install the ansible requirements
+##
+cd /var/tmp/configuration
+sudo pip install -r requirements.txt
+
+##
+## Run the edx_sandbox.yml playbook in the configuration/playbooks directory
+##
+cd /var/tmp/configuration/playbooks
+sudo ansible-playbook -c local ./edx_sandbox.yml -i "localhost,"