Added cdn link

README.md

@@ -4,34 +4,44 @@ Load [dot](https://en.wikipedia.org/wiki/DOT_(graph_description_language)) files
 
 # usage
 
-``` javascript
-var dot = require('ngraph.fromdot');
+You can get the library from CDN:
 
+``` html
+<script src='https://cdn.jsdelivr.net/npm/ngraph.fromdot/dist/ngraph.fromDot.js'></script>
+```
+
+Or from npm:
+
+```
+npm install ngraph.fromdot
+```
+
+and then:
+
+``` js
+var fromDot = require('ngraph.fromdot');
+```
+
+After the library is loaded, it is straightforward to use:
+
+``` js
 // you can load empty graph:
-var emptyGraph = dot('digraph G {}');
+var emptyGraph = fromDot('digraph G {}');
 
 // or graph with edges only:
-var twoEdgesGraph = dot('digraph G { a -> b }');
+var twoEdgesGraph = fromDot('digraph G { a -> b }');
 
 // above graph is the same as
-var sameAsAbove = dot('digraph G { a; b; a -> b }');
+var sameAsAbove = fromDot('digraph G { a; b; a -> b }');
 
 // you can also "append" to existing graph if you wish so:
-dot('digraph B { a -> b }', emptyGraph);
+fromDot('digraph B { a -> b }', emptyGraph);
 
 // now emptyGraph is no longer empty:
 emptyGraph.getLinksCount(); // returns 1
 emptyGraph.getNodesCount(); // returns 2
 ```
 
-# install
-
-With [npm](https://npmjs.org) do:
-
-```
-npm install ngraph.fromdot
-```
-
 # license
 
 MIT