Update version numbers

Author: schnerd

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-### 1.1.6
+### 1.1.7
 
 * Add support for RequireJS/AMD (thanks @kimxogus)
 

README.md

@@ -35,7 +35,7 @@ var scaleCluster = require('d3-scale-cluster');
 Include the following script tag on your page after D3
 
 ```html
-<script src="https://unpkg.com/d3-scale-cluster@1.1.5/dist/d3-scale-cluster.min.js"></script>
+<script src="https://unpkg.com/d3-scale-cluster@1.1.7/dist/d3-scale-cluster.min.js"></script>
 ```
 
 Reference the scale directly from the d3 object