Update go-reveal.js

How do I miss a '.'?
Update README.md

Updated to reflect the new means of getting the sharing URL.
Update README.md

Add in a link to the sample presentation.
Update README.md

Update formatting a bit.
Update README.md

Make words good
Update README.md
Add a GoInstant tagline
Merge branch 'master' of github.com:gordienoye/go-reveal
Merge branch 'master' into gh-pages