chore: update README

README.md

@@ -1,2 +1,22 @@
 # gkvstore [![Go](https://github.com/plexsysio/gkvstore/workflows/Go/badge.svg)](https://github.com/plexsysio/gkvstore/actions) [![Go Reference](https://pkg.go.dev/badge/github.com/plexsysio/gkvstore.svg)](https://pkg.go.dev/github.com/plexsysio/gkvstore) [![Coverage Status](https://coveralls.io/repos/github/plexsysio/gkvstore/badge.svg?branch=main)](https://coveralls.io/github/plexsysio/gkvstore?branch=main)
 Generic key-value store
+
+gkvstore is a generic KV Store interface which provides an easier
+interface to access underlying database. It is mainly used to abstract
+the database used underneath so we can have a uniform API to use for clients
+
+Different DB adapters can be built for the Store. This allows decoupling DB code
+from specific implementations and ability to change DBs on the fly.
+
+
+## Install
+`gkvstore` works like a regular Go module:
+
+```
+> go get github.com/plexsysio/gkvstore
+```
+
+## Usage
+```go
+import "github.com/plexsysio/gkvstore"
+```