Hardware Wallet: Ledger Nano S Support

[benthecarman]

It would love to use this wallet but I prefer to store everything using cold storage with my Ledger Nano S. If you guys could add support so this wallet is useable with a Ledger Nano S I would begin using this as my primary wallet instead of electrum.

[nopara73]

There are some difficulties in supporting hardware wallets, discussed here: #30

Since this is a larger breath conversation I moved this issue to the Meta repo.

[patrickmichalina]

This would be great. Similar to how Electrum works.