Added a link to gemcanary in 'Other Companies Using Rails'
Merge branch 'add_gemcanary' of github.com:stateio/railstoronto.com into stateio-add_gemcanary

* 'add_gemcanary' of github.com:stateio/railstoronto.com:
  Added a link to gemcanary in 'Other Companies Using Rails'

Conflicts:
	source/_content.markdown