update description and such

Readme.md

@@ -20,13 +20,13 @@
 Koa requires __node v7.6.0__ or higher for ES2015 and async function support.
 
 ```
-$ npm install koa
+$ npm install koa-lite
 ```
 
 ## Hello Koa
 
 ```js
-const Koa = require('koa');
+const Koa = require('koa-lite');
 const app = new Koa();
 
 // response

package.json

@@ -1,7 +1,7 @@
 {
-  "name": "koa",
+  "name": "koa-lite",
   "version": "2.8.2",
-  "description": "Koa web app framework",
+  "description": "Lite version of the Koa web app framework",
   "main": "lib/application.js",
   "scripts": {
     "test": "egg-bin test test",