Added 'more' command (went missing after last update).

* also pry repl now has a prompt again
* reload! sets bot in dispatcher
Replaced CronR/RubyCron submodule with CronR gem.

Haven't remove the submodule yet.
Tricky stuff.
See previous commit.
Trying to remove RubyCron submodule - take 1.
Tidying up.
Added convenience join method.
moduledir (path of bot modules) is now a required config setting.
Added README's for example module and data dirs.
Updating README.
Updated Gemfile.
BeerBot::Modules now defined in lib/.
Bot#hear now accepts 'me' argument.
Updated Facts module.
Updated Oracle module and cleared out old stuff.
Tidying up.
Making require non-relative in modules.

To invoke you need to either make beerbot a gem
or do something like:
  ruby  -I/p/t/b/lib /p/t/b/bin/run-irc.rb \
        path/to/conf.json
where /p/t/b = /path/to/beerbot
Tidying up.
Updated copyright.
New README file!
Fixed specs.