rvagg/node-level-mapped-index — pull request #8 by will123195 (2014-05-27 21:26:33+00:00)
Title: Ability to specify custom mapReducePrefix

The default prefix `mi/` isn't compatible with [lev](https://github.com/hij1nx/lev), so I added the option to specify a custom prefix like this:

```
db = mappedIndex(db, {
mapReducePrefix: 'index!'
})
```