add NotEnoughFunds exception
remove deprecated files from app.fil
set data_files only when install is invoked
update README with pip
Fix currency type for bitcoinvenezuela history

update exchange rate history for bitcoinvenezuela exchange
Merge remote-tracking branch 'electrum/master'

Conflicts:
	README
	gui/qt/main_window.py
	setup.py
modified ixc/ixcoin strings by doge/dogecoin
bitcoin: -> ixcoin:
electrumalt.org -> electrum-alt.org
ibits -> dbits, addrtype = 30
started implementing blockchain logic
initial header file download
blockchain_headers initial download
removed print statements for debugging
block version for auxpow
Merge remote-tracking branch 'upstream/master'
validates until digishield
changed default daemon port
fixed digishield and auxpow block verification
changed default blockchain explorer to dogechain.info