Merge pull request #291 from PHPCSStandards/feature/composer-add-security-link

Composer.json: add link to security policy

Author: jrfnl

composer.json

@@ -17,7 +17,8 @@
     ],
     "support" : {
         "issues" : "https://github.com/PHPCSStandards/PHPCSExtra/issues",
-        "source" : "https://github.com/PHPCSStandards/PHPCSExtra"
+        "source" : "https://github.com/PHPCSStandards/PHPCSExtra",
+        "security": "https://github.com/PHPCSStandards/PHPCSExtra/security/policy"
     },
     "require" : {
         "php" : ">=5.4",