Update build configuration

.travis.yml

@@ -5,15 +5,18 @@ php:
   - 5.4
   - 5.5
   - 5.6
+  - 7.0
   - hhvm
 
 before_script:
   - travis_retry composer self-update
   - travis_retry composer install --no-interaction --prefer-source --dev
+  - travis_retry phpenv rehash
 
 script:
-  - phpunit --coverage-text --coverage-clover=coverage.clover
+  - ./vendor/bin/phpcs --standard=psr2 src/
+  - ./vendor/bin/phpunit --coverage-text --coverage-clover=coverage.clover
 
 after_script:
-  - wget https://scrutinizer-ci.com/ocular.phar
-  - php ocular.phar code-coverage:upload --format=php-clover coverage.clover
+  - if [ "$TRAVIS_PHP_VERSION" != "hhvm" ] && [ "$TRAVIS_PHP_VERSION" != "7.0" ]; then wget https://scrutinizer-ci.com/ocular.phar; fi
+  - if [ "$TRAVIS_PHP_VERSION" != "hhvm" ] && [ "$TRAVIS_PHP_VERSION" != "7.0" ]; then php ocular.phar code-coverage:upload --format=php-clover coverage.clover; fi

CONTRIBUTING.md

@@ -25,8 +25,13 @@ We accept contributions via Pull Requests on [Github](https://github.com/axisofs
 ## Running Tests
 
 ``` bash
-$ phpunit
+$ ./vendor/bin/phpunit
 ```
 
+## Running Code Style Linter
+
+```bash
+$ ./vendor/bin/phpcs --standard=psr2 src/
+```
 
 **Happy coding**!

composer.json

@@ -20,7 +20,9 @@
         "php" : ">=5.3.0"
     },
     "require-dev": {
-        "phpunit/phpunit" : "4.*"
+        "phpunit/phpunit": "~4.0",
+        "mockery/mockery": "~0.9",
+        "squizlabs/php_codesniffer": "~2.0"
     },
     "autoload": {
         "psr-4": {