multiple changes:
* create a complete index, not just chapter names
* added a stylesheet for HTML (contributed by Malte Dik)
* fixed broken images in chapter 2
* embedded version/date information into generated files
* enhanced and fixed conversions scripts
* remove book.md because it is generated automatically
Add missing pieces for HTML conversion
Merge pull request #68 from kaie/master

multiple changes. Thanks very much kaie!