Adding bitcoinjs-lib 2.0
Added a field on the landing page so we can enter an xpub key.
Split apart the address and xpub views, and added generation of 10 addresses based on an xpub key.
Moved the address list into the sidebar, in the xpub view.
Updated the xpub view to show balances for all currencies on a variety of addresses.
Added processing of coin data and icons, which can't be fully tested until we get the connection to Omni back online.
Added balance totals on a per-currency basis.
Merge branch 'master' of github.com:curtislacy/svallet into HD

Conflicts:
	package.json
Updated bitcoinjs-lib to version 1.0.0.
Updated to use the new 1.0.0 release of bitcoinjs-lib.
Added USD valuation to the xpub view.