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

Added elasticsearch fun stuff

- Removed Changelog section
- Added quote specification
- Added thanks section

Update README.md

add precisions to the -g option

Update tweep.py

Tweep.py would generate an error on -g option if used as unique argument.

Update READ.ME

add explantion for -g option

Added a -g option for geocoded tweets