update travis file

.travis.yml

@@ -7,9 +7,11 @@ before_install:
   - rvm install 2.2
   - gem install awesome_bot
   - gem install danger
-  
+
-script:
+before_script:
   - git diff master.. -U0 README.md | grep -Po "(?<=^\+).*" >> temp.md
+
+script:
   - node test.js temp.md
   - awesome_bot temp.md --allow-redirect
   - danger --verbose