Mock Provider need rework

[frozeman]

Mock HttpProvider should be renamed to MockHttpProvider.

And accept and array of results that are fired after 10ms, one by one.

new MockHttpProvider([
   '0x12345678....', // some function result
   '0x000000...000001',  // supportsInterface result
   (params) => { if (params[0] === '0x123456789') return '0x123456789..'  }, // also functions should work, where the requested parameter is passed in
   '0x213456789' // some function result
])