Added comments on the sync functionality
Added comments on the sync functionality

jedisct1/sdk,meganz/sdk,meganz/sdk,jedisct1/sdk,Acidburn0zzz/sdk,PatrickJBaird/sdk,meganz/sdk,Alexx99/sdk,javiserrano/sdk,SuperStarPL/sdk,SuperStarPL/sdk,javiserrano/sdk,sergiohs84/sdk,SuperStarPL/sdk,Novo1987/sdk,sergiohs84/sdk,meganz/sdk,sergiohs84/sdk,Alexx99/sdk,thedebian/sdk,javiserrano/sdk,javiserrano/sdk,Sisky/sdk,BiuroCo/mega,PatrickJBaird/sdk,Alexx99/sdk,18671178307/sdk,Novo1987/sdk,thedebian/sdk,Novo1987/sdk,PatrickJBaird/sdk,BlackFired/sdk,BiuroCo/mega,Alexx99/sdk,Acidburn0zzz/sdk,thedebian/sdk,Sisky/sdk,Novo1987/sdk,Novo1987/sdk,Acidburn0zzz/sdk,18671178307/sdk,BiuroCo/mega,PatrickJBaird/sdk,wizzard/sdk,javiserrano/sdk,javiserrano/sdk,meganz/sdk,jedisct1/sdk,sergiohs84/sdk,BlackFired/sdk,jedisct1/sdk,jedisct1/sdk,SuperStarPL/sdk,jedisct1/sdk,SuperStarPL/sdk,Acidburn0zzz/sdk,PatrickJBaird/sdk,jedisct1/sdk,meganz/sdk,PatrickJBaird/sdk,thedebian/sdk,Acidburn0zzz/sdk,sergiohs84/sdk,meganz/sdk,18671178307/sdk,BiuroCo/mega,Sisky/sdk,BiuroCo/mega,Acidburn0zzz/sdk,Novo1987/sdk,BlackFired/sdk,wizzard/sdk,BlackFired/sdk,wizzard/sdk,BlackFired/sdk,18671178307/sdk,sergiohs84/sdk,sergiohs84/sdk,18671178307/sdk,Sisky/sdk,Alexx99/sdk,Novo1987/sdk,18671178307/sdk,18671178307/sdk,BiuroCo/mega,wizzard/sdk,sergiohs84/sdk,thedebian/sdk,thedebian/sdk,jedisct1/sdk,BlackFired/sdk,Acidburn0zzz/sdk,Alexx99/sdk,SuperStarPL/sdk,Acidburn0zzz/sdk,Sisky/sdk,18671178307/sdk,Novo1987/sdk,Sisky/sdk