updated readme

README.md

-The files linked to in resources are not included in the archive, 
-to limit the size of the archive.
+The site has been tested in Firefox 22.0 (Desktop), Chrome 28.0
+(Desktop), Chrome 28.0 (Android 4.3), Firefox 22.0 (Android 4.3), Opera
+Mini 7.5 (Android 4.3). Opera Mini faired well, but missed a few steps.
+Probably won't work well in IE < 9.
 
-The site has been tested in Firefox 22.0 (Desktop), Chrome 28.0 
-(Desktop), Chrome 28.0 (Android 4.3), Firefox 22.0 (Android 4.3), 
-Opera Mini 7.5 (Android 4.3). Opera Mini faired well, but missed
-a few steps. Probably won't work well in IE < 9.
+The weird font sizes on Chrome and Firefox on Android are due to font
+boosting. I'll keep it enabled because it does vastly improve
+legibility, and also fits the page (horizontally) within the screen.  To
+disable it, add this meta tag to the head element in each page:
 
-The weird font sizes on Chrome and Firefox on Android are due to
-font boosting. I'll keep it enabled because it does vastly improve
-legibility, and also fits the page (horizontally) within the screen.
-To disable it, add this meta tag to the head element in each page:
+```html
 <meta name="viewport" content="width=device-width, initial-scale=1">
+```
 
-Status of the exercises:
-1. Title - all pages.
-2. 3+ Headings - index.html
-3. Some paragraphs - index.html
-4. 1+ Ordered lists - index.html
-5. 1+ Unordered lists - all pages.
-6. 1+ Tables - acad.html
-7. Some line-breaks - all pages
-8. Some horizontal lines - index.html
-9. Some comments - index.html
-10. Various text styles - index.html
-11. Internal bookmarks - resources.html to acad.html
-12. Links to internal pages - all pages (via sidebar).
-13. Links to external websites - contact.html
-14. Relative links - all pages.
-15. Embedded images - all pages (via footer).
-16. Styles within tags - index.html
-17. Styles in style tag - not done (only acad.html needed 
-                                    a specific style, and I 
-                                    moved that to styles/acad.css.)
-18. Separate CSS file - all pages via style.css, 
-                        acad.html via styles/acad.html.
-19. Special characters - acad.html
+Or, alternatively:
 
+```html
+<meta name="HandheldFriendly" content="true">
+```
+
+The site is written for Jekyll as used by Github Pages, and that is
+installed on mars. The site is updated using:
+
+```sh 
+cd ~/devel/web && /usr/local/bin/jekyll build -d
+/users/pg13/murukesh/public_html -w --config _config.yml,_sitename.yml
+```
+
+`_sitename.yml` is my way of tricking Jekyll into adding a `root_url` to
+the generated URLs.  On Github, the file isn't read and `root_url` is
+empty, leading to absolute URLs from the root of the site. On the CSE
+home folder, `_sitename.yml` defines `root_url` to be `~murukesh`,
+making the URLs relative to my home directory.