.travis.yml in mongoid-locker-0.3.2 vs .travis.yml in mongoid-locker-0.3.3

@@ -1,16 +1,18 @@
 language: ruby
 
 rvm:
   - 1.9.3
   - 2.1.2
+  - 2.2
   - jruby-19mode
   - rbx-2
 
 services: mongodb
 
 env:
   - MONGOID_VERSION=2
   - MONGOID_VERSION=3
   - MONGOID_VERSION=4
+  - MONGOID_VERSION=5
 
 cache: bundler