add screenshots to readme

Author: briandesousa

README.md

@@ -1,8 +1,15 @@
 # Reading and Writing XML in Node - Demo App
 
-A demonstration of some of the more popular NPM packages that help read and write XML in Node:
+A simple app that demonstrates a few common packagest that help with reading and writing XML in Node.js applications.
 
-* xml2js and express-xml-bodyparser
-* libxmljs2
-* cheerio
-* svgson
+## xml2js and express-xml-bodyparser
+![xml2js and express-xml-bodyparser demo](screenshots/xml2js.png)
+
+## libxmljs2
+![libxmljs2 demo](screenshots/libxmljs2.png)
+
+## cheerio
+![cheerio demo](screenshots/cheerio.png)
+
+## svgson
+![svgson demonstration](screenshots/svgson.png)