Default to DELETE for null, undefined, or blank values
Add promise support for Model
Add promise support for Query
Add promise support for Scan
Add promise support for Table
Add support for QueryFilter. closes #1
Added callback to dynamoose.model() to be used to ensure table is created - closes #4
Add the ablity to set the defaults globally and added table.waitForActive(). Closes #5
Added waitForActive functionality (replace model callback)
version bump - v0.3.0
v0.3.0 release. Closes #1, #2, #4, and #5