Update travis config to use appraisal

jtmalinowski · jtmalinowski · commit 81fcc2007206 · 2013-08-11T01:40:43.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -3,3 +3,7 @@ language: ruby
 rvm:
   - 2.0.0
   - 1.9.3
+before_install:
+  - gem install bundler --version '>= 1.2.2'
+before_script: 'bundle exec rake appraisal:install'
+script: 'bundle exec rake appraisal test'
