Fixing up some descriptions based on reviews.
Merge branch 'dev'
Merge branch 'master' of github.com:miguelpdl/WebRTC-codelab into gh-pages
Further slight updates to the Index page of the repo
Slight modification to Index file
Merge branch 'dev'
Merge branch 'master' of github.com:miguelpdl/WebRTC-codelab into gh-pages

Conflicts:
	index.md