Renamed hooks into: `before_remote_do`, `remote_do`, `after_remote_do`.
* Added load mechanism for user modules and libraries using 
  $HOSH_HOME which defaults to $HOME/.hosh
* Defined various environment variables (all prefixed with _HOSH)
* Added methods: [files_exist, log_error, load_files, 
load_libdir, load_home_libdir, files_content_stripped ]
* Renamed ARGV to HOSH_ARGV.
* Added option to run a single method local (local|l) or remote (remote|r).
* Added method to display a select menu.
* Added help method that searches for hosh methods and uses vim to open it.
* Added aliases to commands (e.g. help|h)