update package

package.json

@@ -7,8 +7,10 @@
     "bitcoin",
     "copay",
     "multisig",
-    "wallet"
+    "wallet",
+    "bitcore"
   ],
+  "main": "app.js",
   "repository": {
     "url": "git@github.com:bitpay/bitcore-wallet-service.git",
     "type": "git"
@@ -53,5 +55,15 @@
     "coverage": "./node_modules/.bin/istanbul cover ./node_modules/.bin/_mocha -- --reporter spec test",
     "test": "./node_modules/.bin/mocha",
     "coveralls": "./node_modules/.bin/istanbul cover ./node_modules/mocha/bin/_mocha --report lcovonly -- -R spec && cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js && rm -rf ./coverage"
-  }
+  },
+  "contributors": [{
+      "name": "Ivan Socolsky",
+      "email": "ivan@gmail.com"
+    },
+
+    {
+      "name": "Matias Alejo Garcia",
+      "email": "ematiu@gmail.com"
+    }
+  ]
 }