Document how to format long Haddock comments on fields
Add section about if-then-else clauses
Clarify identation of if-then-else clauses in expressions
Explain how to indent case expressions. Closes #8
Add a section on dealing with laziness

The advice in this section is what we actually do in many of our core
libraries and on the advice I've given to new Haskell programmers that
run into performance problem.
Minor improvements
Add a warning against over-use of point-free style

This could really use a better example.
Use correct comment marker
Merge branch 'master' of git://github.com/tibbe/haskell-style-guide