Gulp watch data directory

Gulp was missing the ymls from the _data dir.
Added groups that have a code of conduct
Also added a code-of-conduct tag to keep track of their code of conduct
pages
Adding instructions on how to get on the groups page.
Merge pull request #73 from StrangeWill/group-requirements

Adding instructions on how to get on the groups page.
Merge pull request #72 from StrangeWill/groups-with-coc

Added groups that have a code of conduct
Merge pull request #71 from StrangeWill/gulp-watch-fix

Gulp watch data directory