add Coin Control features
Merge pull request #7 from saironiq/coincontrol

add Coin Control features
Merge pull request #8 from yacoin/master

Update README.md
Update README.md
Multiple enhancements - mostly to GUI.
Fixed version in title.
Update bitcoingui.cpp
Added new icons created by Mjbmonetarymetals (Thanks again!) Updated res
files, and incorporated sairon RenameThread and Mac QT target update.
Upload new images
Update .gitignore
Update checkpoints.cpp
Update scrypt-jane.c

Fix for all env compiles.
Update makefile.mingw
HUGE speedup

Conflicts:
	src/makefile.mingw
	src/scrypt-jane/scrypt-jane.c
Merge pull request #13 from saironiq/testing

HUGE speedup
Update scrypt-jane.c
Update checkpoints.cpp
Created instructions and a makefile for building yacoind on ubuntu.
Used par to format the text
A few minor edits