add 'help' when run.zedboard invoked w/o args
add 'help' when run.zedboard invoked w/o args

hanw/connectal,chenm001/connectal,chenm001/connectal,8l/connectal,hanw/connectal,8l/connectal,hanw/connectal,hanw/connectal,cambridgehackers/connectal,8l/connectal,8l/connectal,cambridgehackers/connectal,cambridgehackers/connectal,cambridgehackers/connectal,csail-csg/connectal,csail-csg/connectal,chenm001/connectal,chenm001/connectal,hanw/connectal,cambridgehackers/connectal,chenm001/connectal,csail-csg/connectal,csail-csg/connectal,csail-csg/connectal,8l/connectal