1 Minute Tutorial For Sparrow Plugins Developers
First you need to install sparrow tool:
$ cpanm Sparrow
Then you need to sign up on SparrowHub:
https://sparrowhub.org/sign_up
Then you need to login at SparrowHub:
https://sparrowhub.org/sign_in
And generate SparrowHub token:
https://sparrowhub.org/token
Setup sparrowhub.json file saveat your laptop:
$ cat ~/sparrowhub.json
{
  "user"  : "melezhik",
  "token" : "ADB4F4DC-9F3B-11E5-B394-D4E152C9AB83"
}
Develop a new plugin:

Follow Outthentic framework documentation on how to develop a sparrow plugins.

Upload plugin to SparrowHub:
$ sparrow plg upload