New Provider: Personal Testnet

[danfinlay]

Now that TestRPC can create a programmatic provider, we could bake a testrpc into MetaMask, and then MetaMask users could use a web IDE and client-side block explorer to have a very rich first experimental period with the blockchain.

Would've been really nice when leading workshops & hackathons, reduces a whole system dependency, and let me tell you, it wasn't fun running TestRPC on a class of old windows machines (waiting for the all-JS version).

[SCBuergel]

I'd be very interested in that for our workshops at Validity Labs which already utilize Metamask!