Created P2SH address generator for 2-of-2 multsig w/ generated public keys for the moment
Renamed create/redeem multisig to be closer to actual use case
Moved useful Bitcoin/Script related functions to btcutils package
fund_p2sh_multisig.go now takes P2SH destination and funds address, using btcutil shared functions
Heavy refactoring to consolidate Bitcoin utility functions
Changed input argument public-key to public-address to clarify
Private keys printed for user when P2SH address generated, this will be removed when user provides public keys