1.4.0 - Altcoin usability & AddressDb improvements + fixes

Major Improvements
*Improved altcoin documentation and usability (added --coin argument) Also expanded support for things like XRP and GRS...
*Improved AddressDB functionality (Now supports arbitrary lists of addresses, so can be used with Eth)
*Reorganise Repo (Bundled third party modules are all now in ./lib as it was getting a bit out of hand...)
*Various fixes and improvements