docs: update hacker news guide (#217)

Author: robin-macpherson

docs/guide/start-with-hn.md

@@ -4,9 +4,9 @@ previewLink: //jsfiddle.net/PeachScript/a4Lxbf9w/embedded/result/
 
 # Start With Hacker News
 
-As the first step in learning this plugin, we will create a infinite scroll version of the [Hacker News](https://news.ycombinator.com/).
+As the first step in learning how to use this plugin, we will create an infinite scrolling version of [Hacker News](https://news.ycombinator.com/).
 
-Firstly, we need to write template, it similar to this (ommited unimportant code):
+Firstly, we need to write a template, which is similar to this (ommited unimportant code):
 
 ``` html {9}
 <header>
@@ -20,9 +20,9 @@ Firstly, we need to write template, it similar to this (ommited unimportant code
 <infinite-loading @infinite="infiniteHandler"></infinite-loading>
 ```
 
-In the template, we put the `InfiniteLoading` component at the bottom of news list, and listen it's `infinite` event by a method called `infiniteHandler`.
+In the template, we put the `InfiniteLoading` component at the bottom of the news list, and listen for it's `infinite` event with a method called `infiniteHandler`.
 
-Then write the core logic, `infiniteHandler` method:
+Then, we write the core logic for the `infiniteHandler` method:
 
 ``` js
 import axios from 'axios';
@@ -56,6 +56,6 @@ export default {
 };
 ```
 
-In the script, we use [HN Search API](https://hn.algolia.com/api) and [axios](https://github.com/mzabriskie/axios) to fetch news data. If the server API returns an array with news data, we will push them into `list`, record current page, and tell this plugin through `$state.loaded` method that we got some data. If the server API returns an empty array, we will tell this plugin through `$state.complete` method that all data has been loaded.
+In the script, we use [HN Search API](https://hn.algolia.com/api) and [axios](https://github.com/mzabriskie/axios) to fetch the news data. If the server API returns an array with the news data, we will push it into `list`, record the current page, and tell this plugin through the `$state.loaded` method that we got some data. If the server API returns an empty array, we will tell this plugin through `$state.complete` method that all data has been loaded.
 
 Now, you can get an infinite scroll version of Hacker News, just like the preview on the right.