Seperate Child Db Server

For Issue  #14:

* Spawns db.js and opens ports 3000,4000,5000 for each db with multilevel
* Parent sends the child the settings to get the settings.path

NOTES: 
* Haven't had experience with the Async Module, so refactoring might take a while on my part.

a more useful comment is to have one above
function checkPath(done, result) {
that comments what is "result". From these few lines, one can see that "result" has a "settings" property, but it is not clear if there are other properties on "result" and their potential uses.