Merge pull request #9 from mikkolehtinen/master

Mock inc functionality
version bump
add example to readme.md
mode sync to under extend of the Db, change underscore to lodash, fix a bug with empty in-mem collection create failing in the findall
bump to 0.3.0
fixed a bug where creating a model with existing id did not end in records array as the addition was only in create path
1 more bug fix and version bump