Add clover to "Database" Section
@@ -553,6 +553,7 @@ _Databases implemented in Go._
- [buntdb](https://github.com/tidwall/buntdb) - Fast, embeddable, in-memory key/value database for Go with custom indexing and spatial support.
- [cache](https://github.com/akyoto/cache) - In-memory key:value store with expiration time, 0 dependencies, <100 LoC, 100% coverage.
- [cache2go](https://github.com/muesli/cache2go) - In-memory key:value cache which supports automatic invalidation based on timeouts.
+- [clover](https://github.com/ostafen/clover) - A lightweight document-oriented NoSQL database written in pure Golang.
- [clusteredBigCache](https://github.com/oaStuff/clusteredBigCache) - BigCache with clustering support and individual item expiration.
- [cockroach](https://github.com/cockroachdb/cockroach) - Scalable, Geo-Replicated, Transactional Datastore.
- [Coffer](https://github.com/claygod/coffer) - Simple ACID key-value database that supports transactions.
