Revert "Merge pull request #1636 from rwjblue/add-travis-config-for-app-blueprint"

This is actually really annoying for people who is not using travis. I have to remove this file always that I `ember init` 

I would rather add this once manually to my project than have it to remove every time I `ember init`.

P.S: I could  .gitignore if you disagree with this.