Update README.md

As this only works on the master branch this should be made clear.
Merge pull request #14 from webhat/patch-1

Update README.md
Fix typo
Add links to docs
Add Friction example
Merge branch 'master' of https://github.com/tiimgreen/github-cheat-sheet
:cat: + :rabbit: = sweeter than Chuck Norris
Update git query Image
Merge branch 'master' of https://github.com/tiimgreen/github-cheat-sheet
Update Ja translation