Creating storage path fails due to bad mkdirp option.

[bnielsen1965]

The mkdirp node module has breaking changes from version 0.5 to 1.0 and the package.json for nedb-core is requesting the "latest" version of mkdirp. This breaks nedb-core which relies on mkdirp version 0.5.

There are two options to fix the issue...

1. Change the package.json dependency to mkdirp version 0.5.

2. Update the nedb-core persistence library to use the new mkdirp async methods.

I can put together a pull request but I'm curious which option would be more acceptable. Option 1 would be easy and low risk. Option 2 would be more forward looking but would require code changes that would come with risks.

Thought?

[rahulsushilsharma]

Thanks man for the heads up really saved lot of debugging time, used the old mkdirp version 0.5 for now works fine.