added dependency

hsbt · hsbt · commit a8b521a2c2ba · 2016-05-21T17:01:05.000+08:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,6 @@
 ---
 before_script:
-- gem install hoe kpeg racc --no-rdoc --no-ri
+- gem install hoe kpeg racc json --no-rdoc --no-ri
 - gem install minitest -v '~> 4.0'
 language: ruby
 notifications:
