[rvm] try to install ruby 2.2.1.

Author: truthbk

.travis.yml

@@ -9,8 +9,6 @@ branches:
 language: python
 python:
   - "2.7"
-ruby:
-  - "2.2.0"
 
 cache:
   directories:
@@ -32,7 +30,10 @@ env:
   matrix:
 
 # Override travis defaults with empty jobs
-before_install: echo "OVERRIDING TRAVIS STEPS"
+before_install:
+  - echo "OVERRIDING TRAVIS STEPS"
+  - rvm get stable --auto-dotfiles
+  - rvm install 2.2.1
 install: echo "OVERRIDING TRAVIS STEPS"
 before_script: echo "OVERRIDING TRAVIS STEPS"