bump ruby version to 2.3.1

firefart · firefart · commit 38320d43043a · 2016-05-03T06:23:15.000+02:00
diff --git a/.ruby-version b/.ruby-version
@@ -1 +1 @@
-2.1.9
+2.3.1
diff --git a/.travis.yml b/.travis.yml
@@ -10,7 +10,7 @@ addons:
       - graphviz
 language: ruby
 rvm:
-  - '2.1.8'
+  - '2.3.1'
 
 env:
   - RAKE_TASKS="cucumber cucumber:boot" CREATE_BINSTUBS=true
