readme update

Author: amirlogic

README.md

@@ -1,2 +1,14 @@
-# json-to-svg
+# JSON to SVG
+
 Generate SVG from JSON
+
+
+```javascript
+
+import * as d3 from "d3";
+
+const { svgen } = require('json-to-svg')
+
+console.log( svgen(d3,{"target":"histogram","color":"blue","barwidth":20,"intergap":5,"dataset":[25,67,45,19,89],"size":2,"animate":true}) )
+
+```