Fix openOnFocus

Author: jonashaag

lib/Select.js

@@ -407,7 +407,7 @@ var Select = _react2['default'].createClass({
 });
 } else {
 // otherwise, focus the input and open the menu
-this._openAfterFocus = true;
+this._openAfterFocus = this.props.openOnFocus;
 this.focus();
 }
 },
@@ -1224,4 +1224,4 @@ var Select = _react2['default'].createClass({
 });
 
 exports['default'] = Select;
-module.exports = exports['default'];
+module.exports = exports['default'];