Changed failmessage when entering unkown command
Changed failmessage when entering unkown command

New users should be aware of the existence
of the "help" command when they try the
pfw for their first time

wzairix/parameter-framework,geekboxzone/mmallow_external_parameter-framework,clero/parameter-framework,tcahuzax/parameter-framework,dbrageul/parameter-framework,sdnnfv/parameter-framework,android-ia/hardware_intel_parameter-framework,sdnnfv/parameter-framework,wzairix/parameter-framework,wzairix/parameter-framework,sdnnfv/parameter-framework,android-ia/hardware_intel_parameter-framework,dbrageul/parameter-framework,anwarMov/parameter-framework,pafonso/parameter-framework,Makohoek/parameter-framework,zchokri/parameter-framework,AdrienMQ/parameter-framework,soaresm/parameter-framework,soaresm/parameter-framework,tcahuzax/parameter-framework,krocard/parameter-framework,Makohoek/parameter-framework,AdrienMQ/parameter-framework,01org/parameter-framework,zchokri/parameter-framework,clero/parameter-framework,dawagner/parameter-framework,pafonso/parameter-framework,miguelgaio/parameter-framework,mgaio/parameter-framework,krocard/parameter-framework,soaresm/parameter-framework,dawagner/parameter-framework,krocard/parameter-framework,01org/parameter-framework,miguelgaio/parameter-framework,miguelgaio/parameter-framework,dawagner/parameter-framework,dbrageul/parameter-framework,anwarMov/parameter-framework,mgaio/parameter-framework,01org/parameter-framework,geekboxzone/mmallow_external_parameter-framework,zchokri/parameter-framework,clero/parameter-framework,AdrienMQ/parameter-framework,anwarMov/parameter-framework,mgaio/parameter-framework,geekboxzone/mmallow_external_parameter-framework,Makohoek/parameter-framework,tcahuzax/parameter-framework,pafonso/parameter-framework,android-ia/hardware_intel_parameter-framework