localStorage vs sessionStorage

I think it might be good to provide an option to set the storage type (or switch between the two)

1. localStorage is persistent and per domain
2. sessionStorage is non-persistent and per tab/page

Both have their own applications.

Suggested API change:

// type -- str, either "localStorage" or sessionStorage"
store.use(type)

[marcuswestin]

store.js v2 is almost complete, and has a session storage option (among a bunch of additional addon features - see https://github.com/marcuswestin/store.js/tree/v2-dev/storage & https://github.com/marcuswestin/store.js/tree/v2-dev/addon)

[marcuswestin]

The docs explain how to create a custom build - to get one that only uses sessionStorage, you can do this:

// Example custom build usage:
var engine = require('../store-engine')
var storages = [require('store/storages/sessionStorage')
var plugins = []
var store = engine.createStore(storages, plugins)
store.set('foo', 'bar')