added version 0.1
start version 0.2
nose
added pods and afnetworking
added OSCoreDataSync
create sample project
added OSCoreDataSyncEngine
formatValue refactored and OSDatabase refactored
fixed updated_at refresh with server
file download to NSData done
OSCoreData sync engine done. Only lacks send file to server
nada
merged
added version info
pods
added unittesting to OSDatabase"
refactored code
nada
antes merge
merged with develop