add Finder & update main.js & cleanup some old files

browser/finder/Components/FinderInput.jsx

@@ -0,0 +1,15 @@
+var React = require('react/addons')
+
+module.exports = React.createClass({
+  propTypes: {
+    onChange: React.PropTypes.func,
+    search: React.PropTypes.string
+  },
+  render: function () {
+    return (
+      <div className='FinderInput'>
+        <input value={this.props.search} onChange={this.props.onChange} type='text'/>
+      </div>
+    )
+  }
+})