Merge pull request #2908 from BanzaiMan/ha-feature-containers

Add build on Trusty and OS X

.travis.yml

-# no installation...
+language: c
+
+matrix:
+  include:
+    - os: linux
+      sudo: 9000
+    - os: osx
+      osx_image: xcod6.4
 
 install:
- - sudo apt-get -q install gperf
+  - if [ $TRAVIS_OS_NAME = 'linux' ]; then sudo apt-get update -qq; sudo apt-get -q install gperf; fi
 
 env: MRUBY_CONFIG=travis_config.rb
 script: "./minirake all test"