logger_color - Uses ruby gem logger and add it color

Uses logger from ruby and add color to the logs

Output:

2013-01-15 02:07:06 [INFO][tests.rb][4] :: Test

2013-01-15 02:07:06 [WARN][tests.rb][5] ::Test

2013-01-15 02:07:06 [DEBUG][tests.rb][6] ::Test

2013-01-15 02:07:06 [ANY][tests.rb][7] ::Test

(colors are not showed in this file)