updated changelog, version bump to 2.1.1

Author: gmsa

README.md

@@ -2,7 +2,7 @@
 
 vue-grid-layout is a grid layout system, like [Gridster](http://dsmorse.github.io/gridster.js/), for Vue.js. **Heavily inspired in [React-Grid-Layout](https://github.com/STRML/react-grid-layout)**
 
-### **Current version:** 2.1.0 (Supports Vue 2.0+)
+### **Current version:** 2.1.1 (Supports Vue 2.0+)
 
 ### **For Vue 1 use version [1.0.0](https://github.com/jbaysolutions/vue-grid-layout/tree/1.0.0)**