add go

- index

```html
<meta property="og:url" content="http://jsgirls.org/index.html">
<meta property="og:site_name" content="JS Girls">
<meta property="og:title" content="Hello, We are JS Girls! | JS Girls">
```

- tokyo-201403

```html
<meta property="og:url" content="http://jsgirls.org/events/tokyo-201403">
<meta property="og:site_name" content="JS Girls">
<meta property="og:title" content="JS Girls Tokyo #1 | JS Girls">
<meta property="og:description" content="Google Chrome拡張機能をつくってJavaScriptを学ぼう！">
<meta property="og:image" content="/assets/img/event/tokyo-201403.png">
```