Adds --trace option when running linterbot.
Adds --trace option when running linterbot.

This will print the stacktrace in case of error for easy
debugging.

guidomb/ios-scripts,guidomb/ios-scripts,guidomb/ios-scripts,hzalaz/ios-scripts,hzalaz/ios-scripts,danielaRiesgo/ios-scripts,guidomb/ios-scripts,danielaRiesgo/ios-scripts,danielaRiesgo/ios-scripts,hzalaz/ios-scripts