fix instance handling in fetch

0.0.7

add publish to Makefile

0.0.5

use bluebird instead of q

fetch update

• Make fetch fail if value is null
• Move fetch from AutosaveObject.prototype.fetch to AutosaveObject.fetch

Add AutosaveObject.extend

0.0.2

add AutosaveObject.extend

NPM release

0.0.1

add documentation in readme