fix test on node
txproposal basic features and test
BIP32 PrivateKey wrapper
add sign in block
add sign in block
tx proposal test. PrivateKey
Wallet model and testing
txpropal MERGE working!
add testes to test.txproposal
txproposal comuninication between peers. Still WIP
Fixed conflicts with 'master'.

Merge branch 'master' into feature/wallet

Conflicts:
	copay.js
Fixed path to copayBundle.js on index.html files for home and tests. Commented methods that use http request.
many bugs fix in peer connections, and ux
Merge pull request #29 from cmgustavo/feature/wallet

Wallet model and testing
fix conflicts