add support for json type
alias enum validation attribute as `in` for anchor
update readme with available types
Update README.md
Merge pull request #56 from Zolmeister/patch-1

Added promises example
Changed next() to cb()
Merge pull request #63 from dubcanada/master

Changes next() to cb() in example and readme
one last cb name fix
add enum validation
log error if no callback is supplied to `done`/`exec`
hardcode anchor version
rearrange lifecycle callback order

Moves beforeCreate and beforeSave to run before the actual validation
takes place.
rename beforeSave/afterSave to beforeUpdate/afterUpdate
rollback lifecycle callback reorder
cleanup dependencies
Fixed issue with defaultsTo not working when set to boolean false.
Merge pull request #67 from sgress454/master

Fixed issue with defaultsTo not working when set to boolean false.
Updated contributors so we can have the mad propzz
added custom types
added .sum() and .average() deferred calls