Merge pull request #158 from JakubJecminek/master

Added BTDB to key value db stores

README.md

@@ -173,6 +173,7 @@ You can read more about this distinction on Prof. Daniel Abadi's blog: [Distingu
 * [Amazon DynamoDB](https://aws.amazon.com/dynamodb/) - distributed key/value store, implementation of Dynamo paper.
 * [Badger](https://open.dgraph.io/post/badger/) - a fast, simple, efficient, and persistent key-value store written natively in Go.
 * [Bolt](https://github.com/boltdb/bolt) - an embedded key-value database for Go.
+* [BTDB](https://github.com/Bobris/BTDB) - Key Value Database in .Net with Object DB Layer, RPC, dynamic IL and much more
 * [BuntDB](https://github.com/tidwall/buntdb) - a fast, embeddable, in-memory key/value database for Go with custom indexing and geospatial support.
 * [Edis](https://github.com/cbd/edis) - is a protocol-compatible Server replacement for Redis.
 * [ElephantDB](https://github.com/nathanmarz/elephantdb) - Distributed database specialized in exporting data from Hadoop.