Updating README for new SDK format

Initial pass using the standardized SDK README layout
autoRecordLocation is now gone in the latest SDK refactor. Its up to users to set the location themselves.
Also, we may want to migrate this to use 
+ (id<BuddyClientProtocol>) init:(NSString *)appID
                          appKey:(NSString *)appKey
                     withOptions:(NSDictionary *)options;

Actually, right now I dont believe we even expose 
These:
[Buddy init:@"myAppId" appKey:@"myAppKey" autoRecordDeviceInfo:TRUE autoRecordLocation:TRUE instanceName:@"firstName"];

(We can add them to the client protocol if needed)