Fails if plugin has npm account name in name

[globules-io]

Hi! Love this tool! Hope you can fix when you get the time.. The tool seems to fail if the plugin name contains a npm account in it

cordova-check-plugins

**********************
* Up-to-date plugins *
**********************

plugin: cordova-plugin-whitelist
source: npm://cordova-plugin-whitelist@^1.3.4
installed version: 1.3.4
remote version: 1.3.4

*********************************
* Error checking plugin version *
*********************************

plugin: @globules-io/cordova-plugin-ios-xhr
source: npm://@globules-io/cordova-plugin-ios-xhr@^1.1.0
installed version: UNKNOWN - check plugins/fetch.json for orphaned entries
remote version: 1.1.0

fetch.json has

"@globules-io/cordova-plugin-ios-xhr": {
    "source": {
      "type": "registry",
      "id": "@globules-io/cordova-plugin-ios-xhr@^1.1.0"
    },
    "is_top_level": true,
    "variables": {}
  },

Let me know if you need more info.