use 2.1 instead of 2.1.0 because travis cannot find the dependency

tmconnors · tmconnors · commit e9102ee0d262 · 2017-09-01T14:50:31.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -7,7 +7,7 @@ rvm:
   - 2.4.0
   - 2.3.0
   - 2.2.0
-  - 2.1.0
+  - 2.1
   - 2.0.0
 matrix:
   fast_finish: true

-Original file line number
+Diff line change
   - 2.4.0
   - 2.3.0
   - 2.2.0
 -  - 2.1.0
 +  - 2.1
   - 2.0.0
 matrix:
   fast_finish: true