make counter (i) non global
Merge pull request #56 from void-995/master

Added "Creating Items" paragraph to the README.md
Merge pull request #61 from locomote/remove-globals

Make counter (i) non global
Support Model.find({ prop: null }) (closes #59)

These uses sql syntax "prop IS NULL"
Merge pull request #1 from dresende/master

Update from original repository