.travis.yml in pesapal-1.5.6 vs .travis.yml in pesapal-1.6.0

@@ -1,7 +1,8 @@
 language: ruby
 rvm:
+  - 2.1.2
+  - 2.1.1
   - 2.1.0
   - 2.0.0
   - 1.9.3
-  - 1.9.2
 script: bundle exec rspec spec