[Issue #460] Add Contributor Covenant template
[Issue #460] Add Contributor Covenant template

Quick's code of conduct uses the [Contributor Covenant](http://contributor-covenant.org/). This is just a copy-paste of their english version on the website. An email address will need to be added.
Quick/Quick,jeffh/Quick,phatblat/Quick,jeffh/Quick,dgdosen/Quick,ikesyo/Quick,dgdosen/Quick,marciok/Quick,DanielAsher/Quick,phatblat/Quick,phatblat/Quick,Quick/Quick,Quick/Quick,DanielAsher/Quick,marciok/Quick,marciok/Quick,phatblat/Quick,ikesyo/Quick,Quick/Quick,jeffh/Quick,dgdosen/Quick,ikesyo/Quick