update migration and test schema to *not* set default values for ID columns
Update README.md

From what I understand there's only one line that needs to be uncommented. I'm just clearing this up to avoid confusion. I could be wrong though.
Update gemfiles to use awesome_nested_set 3.0.  Rubinius build is fragile on Travis, so allow failure.
Merge pull request #78 from chrisb/master

Agreed.  Default values should not be set on referencing id columns.
Merge pull request #84 from petergoldstein/feature/update_gemfiles_to_use_released_ans

Update gemfiles to use awesome_nested_set 3.0
Merge pull request #80 from coreypnorris/patch-1

You are correct - this change got missed in the updates to the README when the acts_as_votable integration was changed.