Merge pull request #462 from kevieyang/upgrade_ruby_version

Modified ruby from 2.1.2 to 2.1.5

.travis.yml

@@ -4,7 +4,7 @@ language: ruby
 env: GROWSTUFF_SITE_NAME="Growstuff (travis)" RAILS_SECRET_TOKEN='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
 bundler_args: --without development production staging
 rvm:
-  - 2.1.2
+  - 2.1.5
 before_script:
   - psql -c 'create database growstuff_test;' -U postgres
 script:

CONTRIBUTORS.md

@@ -50,4 +50,5 @@ submit the change with your pull request.
 - Emma Winston / [emmawinston](https://github.com/emmawinston)
 - Kevin Rio / [krio](https://github.com/krio)
 - Yoong Kang Lim / [yoongkang](https://github.com/yoongkang)
+- Kevin Yang / [kevieyang](https://github.com/kevieyang)
 

Gemfile

@@ -1,6 +1,6 @@
 source 'https://rubygems.org'
 
-ruby "2.1.2"
+ruby "2.1.5"
 
 gem 'bundler', '>=1.1.5'