Update README.md
Change directory name and add cleanup to build script
Merge libwallet (develop) into libbitcoin (develop).
Rename test scriptnum.cpp to script_number.cpp, cadd comments.
Remove replaced file (dead coed), fix definitions for non-windows.
Normalize comments.
Fix amount.cpp referencein makefile.
Merge pull request #50 from evoskuil/develop

Merge libwallet