demoDyn update - merge who&introduce

psGrammar/demos/demoDynamic.jsgf

 #JSGF V1.0;
 grammar commands;
 
-public <command> = [<robot>] ( <save> | <wave> | <who> | <goTo> | <followMe> | <followHand> | <gravity> | <exit> | <trash> | <search> | <describe> | <difference>);
+public <command> = [<robot>] ( <introduce> | <save> | <wave> | <goTo> | <followMe> | <followHand> | <gravity> | <exit> | <trash> | <search> | <describe> | <difference>);
 
 <robot> = (tobi | robot | tiago);
 
-<introduce> = (intruduce yourself);
+<introduce> = (intruduce yourself) | (who are you);
 <save> = (save location);
 <wave> = (wait for me);
-<who> = (who are you);
 <goTo> = (go to location);
 <followMe> = (follow me);
 <followHand> = (come with me) | (give me your hand);