Grga is angry

Changes in protocol spec: 

I think is better to announce with 'DJE_SI_GRGA_DRUZE_STARI'. 
Although, we dont' want to break lyrics, so `VOZI_ME_ZA_SURCIN_PREKO_LEDINA' is used for transmitting data.
Merge pull request #1 from hrza/master

Grga is angry.