Updated LevelDB submodule to be our own
Added podspec
Updated podspec to latest commit
Updated submodules
Update podspec again
Update podspec version
Removed submodules
Removed submodules
Added leveldb as a static reference
Add a `-libc++` compiler flag to the podspec
Lots of improvements to the library

- Added encoder/decoder blocks for turning objects into NSData (fallback to NSKeyedArchiver if absent)
- Made keys NSData by default, but NSString possible for setting and getting objects (UTF8 encoding is assumed)
- Made as much of the API mimic NSMutableDictionary
- Added a `safe` property to control leveldb's `fsync` behavior
- Added a `-initWithPath:andCacheSize` initializer method to take advantage of leveldb's builtin LRU cache
Renamed the project to Objective-LevelDB
Improved LevelDB by taking advantage of NSPredicate for filtering on enumeration and aggregation
Moved code around and added pragma marks
Another big hit at Objective-LevelDB

- Writebatch (atomic writes)
- Snapshot (consistent DB view)
- All available LevelDB options (caching, bloom filters, paranoid mode, etc.)
Simplified and made ivar/properties safer
Improved memory management for non-ARC project
Only copy read options if there is a snapshot to add to it (optimization)
Factored conditional seeking into a macro
Test for predicate existence before enumeration