fixing protractir

Author: troolee

.travis.yml

@@ -10,7 +10,7 @@ addons:
     packages:
     - g++-4.8
 before_install:
-- npm install -g protractor
+- npm install -g protractor@3.3.0
 install:
 - npm install -g npm@2
 - npm install -g grunt-cli