Adding license and initial composer.lock.

Author: virgofx

composer.json

@@ -1,6 +1,7 @@
 {
     "name": "phpv8/v8js-stubs",
     "description": "IDE stubs vor V8Js PHP extension",
+    "license": "MIT",
     "require": {
         "php": ">=5.3.3"
     }