Merge pull request #13 from cahman/master

cahman Haxe Manual Edits
change documentclass to book and add parts
handle \chapter and \part in the parser
unlink output directory before re-generation (closes #11)
make sure every section has a label and generate .md files accordingly (closes #8)
unify labels
export
Copy EReg from wiki, still work to do: review, check, add info on "map" method
Added doc on EReg.map, minor editings.
class reification (closes #23)
remove export from dev branch
started type building
Dynamic Arrays must be declared explicitly in Haxe 3
Added section on Std.Array -- Closes #19