Update license

Author: talyssonoc

composer.json

@@ -4,7 +4,7 @@
   "require": {
     "ext-v8js": ">=0.1.3"
   },
-  "license": "BSD",
+  "license": "BSD-3-Clause",
   "autoload": {
     "classmap": ["ReactJS.php"]
   }