Updated the Demos folders

docs/pcjs/demos/README.md

@@ -3,7 +3,9 @@ PCjs Documentation Demos
 
 This folder provides all the self-contained [PCjs](/docs/about/pcjs/) demos described in the [Documentation](/docs/pcjs/).
 
-To use them, download [samples.zip](samples.zip), unzip it into a folder on your web server, and experiment:
+To use them, download [samples.zip](samples.zip), unzip it into a folder on your desktop computer or web server,
+and experiment with them in your web browser.  Since all these samples are self-contained, they should work with either
+the "file:" or "http:" protocol.
 
 + Check out the sample HTML and XML files:
 	- [sample1.html](sample1.html) and [sample1.xml](sample1.xml)
@@ -11,9 +13,11 @@ To use them, download [samples.zip](samples.zip), unzip it into a folder on your
 	- [sample3a.html](sample3a.html) and [sample3a.xml](sample3a.xml)
 	- [sample3b.html](sample3b.html) and [sample3b.xml](sample3b.xml)
 + Feel free to copy/paste additional components from other machine XML files on [pcjs.org](http://www.pcjs.org/).
-+ Please display the current version and appropriate attribution; e.g.:
++ Remember to display the appropriate attribution on anything you share publicly; e.g.:
 		[PCjs](http://pcjs.org) © 2012-2014 by [Jeff Parsons](mailto:Jeff@pcjs.org) ([@jeffpar](http://twitter.com/jeffpar))
-+ Remember to check the [pcjs.org](http://www.pcjs.org/) website periodically, to keep your copy of PCjs up-to-date.
++ Stay in sync with the [PCjs repository](https://github.com/jeffpar/pcjs), to keep your copy of PCjs up-to-date.
+
+Have fun!
 
 [IBM PC](sample3b.xml "PCjs:sample3")