Revising web programming chapter
Syndication in web programming chapter
Working on the image-based intro to Python
Minor tidy-up on web programming (still need to re-work starting point for example, but out of time)
Shell script outlines of lessons for Git
More notes about teaching Git
Updating web chapter, and fixing ID/link format
Merge branch 'master' of github.com:swcarpentry/website into book
Merge pull request #312 from gvwilson/master

Updating material for the instructors' guide.