Setup travis-ci

Author: sueyoshi_go

.travis.yml

@@ -0,0 +1,15 @@
+language: ruby
+rvm:
+  - 1.9
+  - 2.0
+  - 2.1
+  - 2.2
+  - ruby-head
+script:
+  - bundle exec rspec
+notifications:
+  email: false
+matrix:
+  allow_failures:
+    - rvm: 2.2
+    - rvm: ruby-head