Pdpinch/documentation updates

WIP. Not ready to merge yet. 

@cgee or @bdero can you review the installation instructions, esp. part 3:

https://github.com/mitodl/edx-sga/blob/pdpinch/documentation-updates/README.rst#installation
Does this cover it?

Section 2. of https://github.com/mitodl/edx-sga/blob/pdpinch/documentation-updates/README.rst#installation

I think I may still be missing something...

On Oct 27, 2014, at 11:02 AM, Carson Gee <notifications@github.com> wrote:

> In README.rst:
> 
> >     -  ``pip install -e git+https://github.com/mitodl/edx-sga@release#egg=edx-sga``
> >  
> > -3. Add edx\_sga to INSTALLED\_APPS in Django settings. Enable an XBlock
> Because it is a django app it still does need to be added to INSTALLED_APPS or OPTIONAL_APPS regardless of prod or "trying out"
> 
> —
> Reply to this email directly or view it on GitHub.
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