Issue #51: Delete util.py and move the b58encode function to meat.py which is the only place that uses it
Issue #59: Make the README.md more readable and useful.
Merge branch '51' of https://github.com/jimmysong/ngcccbase

Conflicts:
	util.py
Merge branch '59' of https://github.com/jimmysong/ngcccbase

Conflicts:
	ngccc-gui.py