add ct-suite template

[tsloughter]

This adds a message that can be printed after the template is applied. This is most useful in the init-release template I'll open a PR for soon because updating rebar.config isn't possible so it'll print out what to add to rebar.config for relx.

[tsloughter]

I would think a suite with only all() and the test functions are rare so having the inits is useful and very little to delete if not used. Large comment blocks just make it harder to see everything :).

Based this on what I'd want to use, so yea, personal opinion.