Minor codestyle improvements
Add an option to change the color of the strings
Fix: ENV vars were not being used correctly
Update Readme
(cherry picked from commit 316f98fa0b8b4377e04fea474b92ab3174b21de2)

Signed-off-by: Rafael de Oleza <rafeca@gmail.com>
Minor fix to Readme
Update code coverage
Bump version to 0.8.0