Add build doc
Add a bitid message signing method in HardwareWallet
Merge branch 'develop' of github.com:LedgerHQ/ledger-wallet-chrome into develop
Merge branch 'develop' of github.com:LedgerHQ/ledger-wallet-chrome into feature/native_database

Conflicts:
	app/src/app.coffee
Merge branch 'feature/native_database' of github.com:LedgerHQ/ledger-wallet-chrome into feature/native_database
Use custom VFS