added pepper wdr config and grammar

psConfig/tasks/wdr_pepper/wdr_pepper.conf

+[main]
+startdb=43;
+uttdb=47;
+silence=400;
+timeout=8;
+openDeviceDirectly=yes;
+alsadevice=sysdefault;
+
+[pocketsphinxinstance]
+name=drinks;
+jsgf=../../../psGrammar/tasks/wdr_pepper/wdr.jsgf;
+rsbscope=/speechrec/psa/wdr;
+bestpath=no;
+autoload=yes;

psGrammar/tasks/wdr_pepper/wdr.jsgf

+#JSGF V1.0;
+grammar person;
+
+public <statement> = <naming> | <tellme> | <persons>;
+<naming> = [(hello pepper i am)] <name>;
+<name> = (luca);
+<tellme> = (tell me about the robocup);
+<persons> = (analyze the people for me);
+