`travis init` won't let me create a generic builder

[wirehead]

I've been using the generic language to do various utility CI jobs.

However, when I try to create a new project:

$ travis init
Detected repository as _____/____________, is this correct? |yes| y
Main programming language used: |Ruby| generic
unknown language generic

(This is totally a minor issue, suitable for hazing rituals or spare moments and mostly comes from my overarching ❤️ ❤️ ❤️ of Travis)

[docwhat]

It also doesn't support Shell. 😢 See #331

[BanzaiMan]

If anyone is interested, see https://github.com/travis-ci/travis.rb/pull/332#issuecomment-611100991.