Modified gitignore to skip generated msgs and srvs
Ensure nao_leds.py is executable
Improved nao_behaviors:
 * Removed race conditions between preemption and execution
 * Added debug information
 * Removed topic prefixes
Improved nao_behaviors:
 * Removed race conditions between preemption and execution
 * Added debug information
 * Removed topic prefixes
Merged amend with remote version
Improved nao_leds:
 * Removed topic prefixes
 * Range of std_msgs/ColorRGBA should be between [0, 1]
 * Clearer finishing conditions
Removed topic prefixes from nao_speech
Merge pull request #1 from miguelsdc/master

Many minor improvements for nao_driver: nao_leds, nao_behaviour, nao_speech