Merge pull request #93 from julen/doc-fixes

Doc fixes
Added get_app_dir function.
Added progressbar function.
Added changelog entry and docs
Documented new functions in utils
Fixed a python 3 syntax error.
Added colorama support into the echo function.
Added note on colorama installation.
Fixed a broken rst directive
Added a colorama example.
Cross link for ansi colors.
Docs: progressbar fixes
Docs: fixed typos