Multisite compatibility

Hi,

This is a nice plugin. I like it except how it works with multisite. It seems the whole network share the same database that when you create a snippet in one website it will show up on all other websites. What makes it worse is that the status are synced so you can’t have certain snippet running on a particular site. It does so even though I activate the plugin individually on child sites.

Hope the plugin will become more multi-site friendly and I look forward to test it in the future.