Update README.md

Author: imcvampire

README.md

@@ -1,2 +1,34 @@
 # vue-axios
 A small wrapper for integrating axios to Vuejs
+
+## How to install:
+### CommonJS:
+```
+npm install --save axios vue-axios
+```
+
+And in your entry file:
+```
+import Vue from 'vue'
+import axios from 'axios'
+import VueAxios from 'vue-axios'
+
+Vue.use(VueAxios, axios)
+```
+
+### Script:
+Just add 3 script in order: `vue`, `axios` and `vue-axios` to your `document`.
+
+## Usage:
+This wrapper bind `axios` to var `Vue` or `this` if you're using single file component.
+
+You can `axios` like this:
+```
+Vue.axios.get(api).then((response) => {
+  console.log(response.data)
+})
+
+this.axios.get(api).then((response) => {
+  console.log(response.data)
+})
+```