Add to Application class a method to set the usage message automatically, to show the available commands.
Add to Application class a method to set the usage message automatically, to show the available commands.

VaybhavSharma/commons,ericzundel/commons,atollena/commons,Yasumoto/commons,atollena/commons,brutkin/commons,WCCCEDU/twitter-commons,cevaris/commons,atollena/commons,WCCCEDU/twitter-commons,abel-von/commons,nkhuyu/commons,pombredanne/commons,jsirois/commons,jsirois/commons,Yasumoto/commons,nkhuyu/commons,VaybhavSharma/commons,pombredanne/commons,Yasumoto/commons,cevaris/commons,WCCCEDU/twitter-commons,ericzundel/commons,pombredanne/commons,pombredanne/commons,ericzundel/commons,cevaris/commons,nkhuyu/commons,jsirois/commons,ericzundel/commons,jsirois/commons,abel-von/commons,Yasumoto/commons,abel-von/commons,pombredanne/commons,VaybhavSharma/commons,cevaris/commons,abel-von/commons,abel-von/commons,WCCCEDU/twitter-commons,jsirois/commons,brutkin/commons,atollena/commons,brutkin/commons,Yasumoto/commons,VaybhavSharma/commons,VaybhavSharma/commons,brutkin/commons,nkhuyu/commons,nkhuyu/commons,WCCCEDU/twitter-commons,cevaris/commons,atollena/commons,ericzundel/commons,brutkin/commons