change file name to convention

sails.io.js/sails.io.js-tests.ts

@@ -1,4 +1,4 @@
-/// <reference path="./index.d.ts"/>
+/// <reference path="./sails.io.js.d.ts"/>
 import * as SocketIO from 'socket.io-client';
 import * as SailsIOJS from 'sails.io.js';
 const io = SailsIOJS(SocketIO);

sails.io.js/tsconfig.json

@@ -13,7 +13,7 @@
         "forceConsistentCasingInFileNames": true
     },
     "files": [
-        "index.d.ts",
+        "sails.io.js.d.ts",
         "sails.io.js-tests.ts"
     ]
 }