Bitcore Node Add Command with Remote URLS

[braydonf]

Using the command will use the URL as the name, producing a configuration file such as:

{
  "name": "Bitcore Node",
  "services": [
    "address",
    "bitcoind",
    "db",
    "https://github.com/bitpay/insight-api.git#v0.3.0",
    "web"
  ],
  "datadir": "./data",
  "network": "livenet",
  "port": 3001
}

The add command should recognize that URLs and fetch the name of service from the package.json.

[braydonf]

There are also issues with loading the package.json:

Error: Cannot find module 'https://github.com/bitpay/insight-api.git#v0.3.0/package.json'
    at setupServices (scaffold/start.js:43:30)