[BUGFIX] query param transitions are retry-able

Fixes #4042
Remove garbage file
Merge pull request #4065 from tricknotes/remove-garbage

Remove garbage file from garbage machty's garbage accidental commit
Merge pull request #4064 from machty/retry-qp

[BUGFIX] query param transitions are retry-able
Use Ruby 2.1 to build ember.js
Add missing `bundle exec`