Added MIN_ZONE and MAX_ZONE.
Added MIN_ZONE and MAX_ZONE.

jesuscorral/irrduino,rosope/irrduino,rosope/irrduino,jecrespo/jecrespom-irrduino,jesuscorral/irrduino,google/irrduino,angelmorinigo/irrduino,jecrespo/jecrespom-irrduino,Thibos/irrduino,jesuscorral/irrduino,rosope/irrduino,google/irrduino,google/irrduino,jecrespo/jecrespom-irrduino,rosope/irrduino,angelmorinigo/irrduino,nlrivera/nickrivera12-test,nlrivera/nickrivera12-test,google/irrduino,nlrivera/nickrivera12-test,angelmorinigo/irrduino,jesuscorral/irrduino,jecrespo/jecrespom-irrduino,nlrivera/nickrivera12-test,google/irrduino,nlrivera/nickrivera12-test,Thibos/irrduino,jecrespo/jecrespom-irrduino,rosope/irrduino,Thibos/irrduino,Thibos/irrduino,angelmorinigo/irrduino,jesuscorral/irrduino,angelmorinigo/irrduino,Thibos/irrduino