Merge pull request JedWatson#450 from davidpene/master

simplifying handleKey function

Author: JedWatson

src/Select.js

@@ -425,14 +425,13 @@ var Select = React.createClass({
 	},
 
 	handleKeyDown: function(event) {
-		event.preventDefault();
 		if (this.props.disabled) return;
 		switch (event.keyCode) {
 			case 8: // backspace
 				if (!this.state.inputValue && this.props.backspaceRemoves) {
 					this.popValue();
 				}
-			return;
+			break;
 			case 9: // tab
 				if (event.shiftKey || !this.state.isOpen || !this.state.focusedOption) {
 					return;