removes unecessary dependencies
updates README.md for clarification on getting started/unstuck
Merge pull request #4 from kayellpeee/cleanup/fixDependencies

Cleanup/fix dependencies
adds basic structure for multiSigWallet part of sprint
adds all test for multiSigWallet
finishes all tests for 2/3 multiSig wallet
adds extra credit specs for multiSigWallet(n, m)