Expand the README summary

Author: LeafHacker

README.md

@@ -1,5 +1,9 @@
 # ClientAPI
-API designed to make Clients have Universal Support
+ClientAPI is a modding API just like Forge, Sponge and Liteloader, it is designed to provide a shared base for large client-rewrite style mods.
+
+Like other modding APIs it is a tweaker and has the potential to be stacked with other tweakers, so long as they do not both overwrite the same methods.
+
+Unlike most other modding APIs it is designed to be used by a single "client" mod. It is this "client" that is installed, not the ClientAPI, so the "client" mod has full control over all modifications to the vanilla code, unless of course the installation is stacked on top of other modding APIs.
 
 [![Dependency Status](https://www.versioneye.com/user/projects/588a834fbe496c0037c74b21/badge.svg?style=flat-square)](https://www.versioneye.com/user/projects/588a834fbe496c0037c74b21)
 [![License](https://img.shields.io/github/license/ZeroMemes/ClientAPI.svg?style=flat-square)](https://github.com/ZeroMemes/ClientAPI/blob/master/LICENSE)
@@ -16,6 +20,7 @@ API designed to make Clients have Universal Support
 To use the Client API, you must download [Development Kit](https://github.com/ZeroMemes/ClientAPI-CDK). Instructions on how to set it up will be posted in the README.
 
 ## Concept
+
 * Clients will install into `.minecraft/versions`
   * An installer could be used to configure stacking on top of other tweakers (e.g. Forge)
   * If an installer is used, it could also add a profile to the launcher