rvm:
- 2.0.0
- 2.1
- ruby-head

matrix:
  allow_failures:
  - rvm: ruby-head

rvm:
- 2.0.0
- 2.1
- 2.2
- ruby-head

matrix:
  allow_failures:
  - rvm: ruby-head

Add 2.2 to build matrix
Add 2.2 to build matrix
