Tool integration documentation

The link on "features" page https://cbrain.ca/features.html

https://github.com/natacha-beck/cbrain/wiki/Writting-Tasks-with-Boutiques

leads to a stub/empty page. May be at the least add link to one or more of OHBM posters? 

Or put a link to posters into Natacha's wiki and, as Pierre suggested, remove one "t" from "Writting"