Enhancement: Extract configuration file for phpcs

Author: localheinz

.travis.yml

@@ -21,5 +21,5 @@ install:
   - travis_retry composer install --prefer-dist --no-interaction
 
 script:
-  - vendor/bin/phpcs src --standard=psr2 -spn
+  - vendor/bin/phpcs
   - vendor/bin/phpunit --coverage-text --exclude-group integration

CONTRIBUTING.md

@@ -48,7 +48,7 @@ $ composer global require squizlabs/php_codesniffer
 Then you can `cd` into the Facebook PHP SDK folder and run Code Sniffer against the `src/` directory.
 
 ``` bash
-$ ~/.composer/vendor/bin/phpcs src --standard=psr2 -spn
+$ ~/.composer/vendor/bin/phpcs
 ```
 
 **Happy coding**!

phpcs.xml.dist

@@ -0,0 +1,6 @@
+<?xml version="1.0"?>
+<ruleset>
+    <file>src/</file>
+    <arg value="spn" />
+    <rule ref="PSR2" />
+</ruleset>