Update README.md

Author: ilyabo

README.md

@@ -1,7 +1,7 @@
 # Flowmap.blue R widget
 
 This is an R widget for [Flowmap.blue](http://flowmap.blue).
-Rendering interactive flow maps to visualize numbers of movements between locations (origin-destination data).
+The widget renders an interactive flow map representing numbers of movements between locations (origin-destination data).
 
 ![image](https://user-images.githubusercontent.com/351828/86061814-bb993800-ba67-11ea-9e76-90a75f813327.png)