Add infomation panel

browser/main/Detail/InfoButton.js

@@ -0,0 +1,32 @@
+import React, { PropTypes } from 'react'
+import CSSModules from 'browser/lib/CSSModules'
+import styles from './InfoButton.styl'
+
+class InfoButton extends React.Component {
+  constructor (props) {
+    super(props)
+
+    this.handleInfoButtonClick = this.handleInfoButtonClick.bind(this)
+  }
+
+  handleInfoButtonClick (e) {
+    e.preventDefault()
+    const infoPanel= document.querySelector('.infoPanel')
+    infoPanel.style.display = display === 'none' ? 'inline' : 'none'
+  }
+
+  render () {
+    return (
+      <button styleName='control-infoButton'
+        onClick={(e) => this.handleInfoButtonClick(e)}
+      >
+        <i className='fa fa-info-circle infoButton' styleName='info-button' />
+      </button>
+    )
+  }
+}
+
+InfoButton.propTypes = {
+}
+
+export default CSSModules(InfoButton, styles)