Use ESLint 3.0.0 (3.0.1 fails on Travis)

Author: flodolo

.travis.yml

@@ -12,7 +12,7 @@ before_script:
   ## Travis configuration
   - cp app/config/config.ini-travis app/config/config.ini
   ## Install ESLint
-  - npm install -g eslint
+  - npm install -g eslint@3.0.0
 script:
   - vendor/atoum/atoum/bin/atoum -d tests/units/ --use-light-report
   - php tests/functional/api.php