docs: update readme (#23)

README.md

@@ -1,7 +1,31 @@
 [![Build Status](https://travis-ci.org/LokiJS-Forge/LokiJS2.svg?branch=master)](https://travis-ci.org/LokiJS-Forge/LokiJS2)
-[![Coverage Status](https://coveralls.io/repos/github/LokiJS-Forge/LokiJS2/badge.svg?branch=feature%2Fadd_build_system)](https://coveralls.io/github/LokiJS-Forge/LokiJS2?branch=feature%2Fadd_build_system)
+[![Coverage Status](https://coveralls.io/repos/github/LokiJS-Forge/LokiJS2/badge.svg?branch=master)](https://coveralls.io/github/LokiJS-Forge/LokiJS2?branch=master)
 
-# LokiJS 2
+<h1 align="center">LokiJS 2</h1>
 
 LokiJS is a document oriented database written in javascript, published under MIT License.
 Its purpose is to store javascript objects as documents in a nosql fashion and retrieve them with a similar mechanism.
+
+<h2 align="center">Install</h2>
+
+Install with npm:
+
+```bash
+npm install @lokijs/loki
+```
+
+<h2 align="center">Concepts</h2>
+
+LokiJS has many plugins.
+
+|Name|Status|Description|
+|:--:|:----:|:----------|
+|[@loki/fs-storage][fs-storage]|?|A persistence adapter which persists to node fs module storage.|
+|[@loki/local-storage][local-storage]|?|A persistence adapter which persists to web browser's indexed db storage.|
+|[@loki/indexed-storage][indexed-storage]|?|A persistence adapter which persists to web browser's local storage.|
+|[@loki/partitioning-adapter][partitioning-adapter]|?|An adapter for adapters. Converts a non reference mode adapter into a reference mode adapter which can perform destructuring and partitioning.|
+
+[fs-storage]: https://github.com/LokiJS-Forge/LokiJS2
+[local-storage]: https://github.com/LokiJS-Forge/LokiJS2
+[indexed-storage]: https://github.com/LokiJS-Forge/LokiJS2
+[partitioning-adapter]: https://github.com/LokiJS-Forge/LokiJS2