Added more setup information
Added more setup information

Added setup instructions for Cloud9 IDE at c9.io.  This is intended to
make getting started as easy as possible.

Added a little more information to the Vagrant setup to make them more
clear and to encourage forking of the edbirmingham repo.

andreburto/network,andreburto/network,TadBirmingham/network,jzw/network,TadBirmingham/home,jzw/network,jzw/network,TadBirmingham/network,tmiller/network,TadBirmingham/home,TadBirmingham/home,tmiller/network,andreburto/network,tmiller/network,TadBirmingham/network