.travis.yml in groovehq-1.0.6 vs .travis.yml in groovehq-1.0.7

- old
+ new
@@ -1,7 +1,8 @@
 language: ruby
 cache: bundler
 script: bundle exec rake spec
 rvm:
-  -  2.1.4
+  -  2.3.1
+  -  2.4.1
 env:
   secure: "NiB0KwycVqFejW4SIK6bOlrFJMK00gUbPIQMWM59pmmM8NXjLrPsc11JGmFQ14/+GDpX2UXR22ssPM9zWaK+Il6PLhT54GlO5TUOMM+awfWHYgBJ+j/cgwOK485pTVoTM9uzpWl4Qk8W7S1Hv81sqBW1qAXIm+Ttn5ak4c5dNPov1ClP9PqRPO+RVu6bWski2pumAD0PDD4E0MfY53Vq+0DJXKeWYKblDLrEYK7Y4QVTWuL0aV+MaNivFkfTDxaon/23/pRsP1oiOJ5ArJBiVwMSeDJBUkYtZjyOgVLoFKBaS5/SuZQMLrWEvOifuW2QTEMpIlTMHQotFRJRdnGH6wPRYemCl14LR5I/t7zERPKMR6aYC1AbFFjh2hTPTbdKioHul0+iMoYetEE9p5WT+weBMtxyYZtIXrnSpwF0DJ0OzEfGpB1iOckX+rkmVMU+PpZqFsb9ONqxe25sKWHCx7ViYapdqD8twXOAOmNBWojBdKqOkRQ31G/SqGkXUmfwCw1VkKvn9j2Xy6M6a3LwILV9NFzUzb4+z9xZOzuVzGBtxw8P83M2hM4SvAlCELfnsoLMJDAQxdFOHonTU4qHOXiOQxrFl9L7eqPEx3ykvcziRgemghUYvXIT1mGWwSryA1hz+46wrcGJwZv1wJFeb1PlyotIl4bhxEBr1XmErNI="