Added timedelta to choose the time interval for every request, this speed up the process

Changed script in .travis.yml because of timeout

Fixes #48 and #60

implement issue #53 language selection

and add table with country code

Added dashboard image

fixed typo

Cleaned README file

Deleted the entire elasticearch setup, moved to the wiki.

Added database storing option

Replace all emoticons with their title, to be included in the tweet text

Added some loop around, it seams that could slow down but not because with elasticsearch you can index about 6k items/s so the performance is not affected (in most cases). 

it seams that exporting dashboard and visualization does not work, so people will have to write new ones. Pretty easy, I'll add a short tutorial.