added multinomial to change_lcomp and fixed examples

Reworked the examples to work with the new argument and showed overdispersion.
took out the "Don't run" portion for change_lcomp examples
small change to example so it runs faster
Add seealso to change_lcomp docs
updated examples

removed "dont run" from the examples in this; removed last examle which overlaps with change_lcomp
Add end of line character to .gitignore
Re-document
Merge pull request #105 from seananderson/fix_lcomp

Merge fixes to change_lcomp and change_agecomp