bump ruby version for travis error

thoop · thoop · commit 1da0b99d4fea · 2017-04-13T15:31:00.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,3 +1,3 @@
 language: ruby
 rvm:
-  - 2.0.0
+  - 2.2.2

-Original file line number
+Diff line change
@@ @@ -1,3 +1,3 @@ @@
 language: ruby
 rvm:
 -  - 2.0.0
 +  - 2.2.2