Recover specs helpers from deprecated sinatra-test-helper

https://github.com/rkh/sinatra-test-helper/commit/aef94d821b621db8002fa9784c7c9ad505297710
Add dependencies for specs
Setup for specs to run easily with rake
Add travis-ci build status
Update test order to fix weird routes definition issue
Update travis with allowed failure for RBX & head ruby versions
Merge pull request #4 from hooktstudios/specs

Update specs & travis-ci