Make --version a command instead of a class_option

Having --version be a class_option unfortunately results in Thor listing it as a flag for every other command. It appears the best option is to have -v, --version be a command rather than class_option. (An aside if this is made a command, but I made a mistake in the class_option implementation and called `super` on help when it should be `super(*args)`.)
Add -p, --port and -a, --addr 'server' options
Cleanup CLI formatting

- Match synopsis capitalization and arguments to Thor's convention
- Order commands alphabetically as Thor shows them
- Use #map for the 'new' command alias
Merge pull request #8 from havenwood/cli

Addition of some CLI options and formatting