CLI command for generating tokens for extra twitter accounts

[nahuelhds]

You can now execute diffinengine with --add flag to receive the Twitter auth URL and use it for getting the tokens for the account you wanna add to the config yaml.

Usage example

$ diffengine --add

Log in to https://twitter.com as the user you want to tweet as and hit enter.
Visit https://api.twitter.com/oauth/authorize?oauth_token=QKGAqgAAAAABDsonAAABcbfQfFw in your browser and hit enter.
What is your PIN: 1234567

These are your access token and secret.
DO NOT SHARE THEM WITH ANYONE!

access_token
xxxxxxxxxxx-yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

access_token_secret
zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

This way you can copy&paste the token in your own config.yaml file

[edsu]

Awesome! I kind of like the subcommand style (from git) so diffengine add instead of diffengine --add but I think this works for now, and it can easily be updated later if we need to.

[nahuelhds]

I agree with your observation, Ed. Go with it!

[nahuelhds]

PS: I've fixed the "Y/n" option to actually get the default value as a "Y" when the user just hits Enter when the config is built for the first time