only build a promise if a cb was not passed in. Fixes #708
fix global leak. Fixes #690
Support batch creation if adapter implements createEach method (issue
Merge pull request #718 from Powpow-Shen/master

Support batch creation if adapter implements createEach method (issue #700).
fix cb/promise stuff for destroy
fix issue when createEach gets undefined values
Merge pull request #5 from balderdashy/master

Update waterline to latest