Adding schema.json as main file for bower and npm.

Author: jsdevel

schemas/v2.0/bower.json

@@ -5,6 +5,7 @@
   "authors": [
     "''"
   ],
+  "main": "./schema.json",
   "description": "Swagger JSON Schema",
   "keywords": [
     "swagger",

schemas/v2.0/package.json

@@ -11,5 +11,6 @@
     "api"
   ],
   "author": "",
+  "main": "./schema.json",
   "license": "Apache-2.0"
 }