Finished default theme. Version 0.1.0

- Finished "default" and "proc" themes, removed "plain-table" theme
- Some implementation details in monitor.js
- Changed output JSON format a bit (mostly renaming, and remake of proc object structure)
- Improved stability of the server (some extra safety checks)
- Added --version command line option (short: -v)
- Added uptime to the output JSON
- Added proper README.md