Removed questionable code
Added description method (NSDictionary description)
Corrected final Snowplow header
Minor doc fixes
insertEvent returns rowId
 - Use rowId for deletions
Fixed getAllEvents: & getEventWithId:
Synthesized appId
Include import
Imported EventStore + initial adding (unfinished)
Renamed getPayload to getPayloadAsDictionary
 - Fixes #39
Timed support for flushBuffer
 - Fixes #20
Updated Podfile and podspec
Added a default 60 seconds buffer time with an setter to change with a max of 5 minutes
 - Fixes #20
Podspec only makes Snowplow.h available
Update README.md

http -> https for Travis link
Made queries constant strings
Append /i to the end of the urlEndpoint

- Fixes #40
Added getAllPendingEvents to SnowplowEventStore
Update EventStore header
More minor changes for EventStore