Adjust travis config to use new WPCS dep setup

Author: rask

.travis.yml

@@ -14,12 +14,8 @@ before_install:
   # Update Composer
   - composer self-update
 
-  # Install phpcs with wp-coding-standards
-  - composer create-project wp-coding-standards/wpcs:0.12.0 --no-dev $HOME/wpcs
-
 script:
-  # Check project with phps
-  - ~/wpcs/vendor/bin/phpcs --extensions=php --standard=./phpcs.xml -n -p .
-
-  # Check that composer is valid and installs correctly
   - composer install -o --prefer-dist --no-interaction
+
+  # Check project with phps
+  - ./vendor/bin/phpcs -n -p .