preinstall script to providers-ws module added

Author: nivida

packages/web3-providers-ws/package.json

@@ -5,6 +5,9 @@
     "repository": "https://github.com/ethereum/web3.js/tree/1.x/packages/web3-providers-ws",
     "license": "LGPL-3.0",
     "main": "src/index.js",
+    "scripts": {
+        "preinstall": "rm -rf node_modules/websocket/.git"
+    },
     "dependencies": {
         "underscore": "1.9.1",
         "web3-core-helpers": "1.0.0-beta.37",