Improved documentation.

* refactored output module to visualize.
Improved documentation.
chg: Provide a full license file
chg: add package description to the README.md file
Merge branch 'master' of github.com:weblyzard/ewrt into feature/bing_google_search
ported to Python 3
Merge branch 'develop' into feature/bing_google_search
Merge branch 'feature/bing_google_search' of github.com:weblyzard/ewrt into feature/bing_google_search