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
Okay. I changed the section description to be "installing manually"

On Oct 24, 2014, at 10:01 AM, Brandon DeRosier <notifications@github.com> wrote:

> In README.rst:
> 
> >  
> > -         .. code:: sh
> > -
> > -             mkdir devstack
> > -             cd devstack
> > -             curl –L https://raw.githubusercontent.com/edx/configuration/master/vagrant/release/devstack/Vagrantfile > Vagrantfile
> > -             vagrant plugin install vagrant-vbguest
> > -             vagrant up
> > -             vagrant ssh
> > -
> > -2. Install Package using Pip install (with VM running)
> > +   with pip for evaluation:
> It seems like something less ambiguous here might be "manually".
> 
> —
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