Added database init and create_tables

The database filename/path is read from the config (which is
.gitignored)

The table schema has not been finalized yet.
Method to fetch users from the registration repo

A namedtuple is used to represent the users.

Thanks @raymondh for all your cool python talks.
Methods to add and select users

...along with the necessary db read/write methods.

Vive La Tuples!
Added iqra - the gist fetcher

_Iqra_ is the core bot that will fetch all idea gists and will store them
to the database.

The next bot (_Ziqra_) will then take over and tweet out all the unshared
ideas.

Another bot (_Bushra_) will send watch our twitter account for incoming
tweets (and other things?) and will retweet them.

_Azeema_ (yet another bot) will send out the daily mails.

Note: The bots are named after my four cousin sisters ;)
Quick update to the Readme
Method to fetch gists from github

I've created a Githup application to get the Client ID and Secret
without which Github only allows 60 calls per hour.