Add npm badge and update package.json

Author: Tim Mendoza

README.md

@@ -1,5 +1,6 @@
 # @twilio-labs/plugin-rtc
 
+![npm](https://img.shields.io/npm/v/@twilio-labs/plugin-rtc)
 [![CircleCI](https://circleci.com/gh/twilio-labs/plugin-rtc.svg?style=svg)](https://circleci.com/gh/twilio-labs/plugin-rtc)
 
 This plugin adds functionality to the [Twilio CLI](https://github.com/twilio/twilio-cli) which supports developing and deploying real-time communication apps.

package.json

@@ -6,16 +6,15 @@
   "publishConfig": {
     "access": "public"
   },
-  "repository": "twilio-labs/plugin-rtc",
+  "repository": "https://github.com/twilio-labs/plugin-rtc",
   "scripts": {
     "test": "TZ=utc jest",
     "postpack": "rm -f oclif.manifest.json",
     "prepack": "oclif-dev manifest && oclif-dev readme",
-    "version": "oclif-dev readme && git add README.md",
     "lint": "eslint .",
     "posttest": "npm run lint"
   },
-  "author": "",
+  "author": "Twilio",
   "license": "Apache-2.0",
   "dependencies": {
     "@oclif/command": "^1.5.19",