[fixed] show carousel controls if wrap is enabled

Update Carousel.jsx

Render carousel controls on this.props.wrap = true

Update Carousel.jsx

Render carousel controls on this.props.wrap = true

Author: lilaja

src/Carousel.jsx

@@ -173,7 +173,7 @@ var Carousel = React.createClass({
   },
 
   renderControls: function () {
-    if (this.props.wrap) {
+    if (!this.props.wrap) {
       var activeIndex = this.getActiveIndex();
       var count = ValidComponentChildren.numberOf(this.props.children);
 
@@ -286,4 +286,4 @@ var Carousel = React.createClass({
   }
 });
 
-module.exports = Carousel;
+module.exports = Carousel;