Fixed issues with ANSI colors on iTerm2 #10

thanks @giacomozinetti

• Do not show success message when there's an error on checkout phase

thanks @grgzmy

• Hitting q also quits the interactive list

• Added support to ESC keypress to exit interactive list
• Displays original output from git branch on interactive list, showing active branch

• Fixes npm install -g git-bc

• Basic implementation
• WARNING: npm install -g git-bc isn't working on this version