Added BadgerHold to Projects list (#704)

README.md

@@ -671,6 +671,7 @@ Below is a list of known projects that use Badger:
 * [go-sessions](https://github.com/kataras/go-sessions) - The sessions manager for Go net/http and fasthttp.
 * [Babble](https://github.com/mosaicnetworks/babble) - BFT Consensus platform for distributed applications.
 * [Tormenta](https://github.com/jpincas/tormenta) - Embedded object-persistence layer / simple JSON database for Go projects.
+* [BadgerHold](https://github.com/timshannon/badgerhold) - An embeddable NoSQL store for querying Go types built on Badger
 
 If you are using Badger in a project please send a pull request to add it to the list.