change package name to distinguish it from bitcoinjs-lib (#3)

Author: Melvillian

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "bitcoinjs-lib",
+  "name": "bitgo-bitcoinjs-lib",
   "version": "3.1.1",
   "description": "Client-side Bitcoin JavaScript library",
   "main": "./src/index.js",
@@ -24,7 +24,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/bitcoinjs/bitcoinjs-lib.git"
+    "url": "https://github.com/BitGo/bitcoinjs-lib.git"
   },
   "files": [
     "src"