This commit:
- Adds a --msgfile option to read the message to sign from a file
instead of command line argument.
- Adds a unit test for signing subcommands.
- Removes some weird whitespace in the code.
ethkey is a new tool that serves as a command line interface to
the basic key management functionalities of geth. It currently
supports:
- generating keyfiles
- inspecting keyfiles (print public and private key)
- signing messages
- verifying signed messages
