please document dependencies

[dchmelik]

Please document how to install/setup the necessary Ruby/gem dependencies. Running cccb9 and getting the following errors it's not clear how to do so. Instructions should just be in README for people (such as myself) who don't use Ruby.

dicebot@darwinheim:~$ ./cccb9 
Failed to load lib/cccb/core/httpserver.rb: cannot load such file -- webrick
Failed to load lib/cccb/core/reply.rb: Could not find 'redcarpet' (>= 0) among 87 total gem(s)
Checked in 'GEM_PATH=/home/dicebot/.local/share/gem/ruby/3.0.0:/usr/lib64/ruby/gems/3.0.0' , execute `gem env` for more information
Failed to load lib/cccb/modules/usertrack.rb: cannot load such file -- tzinfo
Failed to load lib/cccb/modules/uri_video_title.rb: cannot load such file -- mechanize
Failed to load lib/cccb/modules/giant_multiplayer_robot.rb: cannot load such file -- mechanize
Failed to load lib/cccb/modules/tables.rb: lib/cccb/modules/tables.rb:155: syntax error, unexpected `do' for block, expecting `end'
...? { |i| r.include? i } }.map do |r,d|
...                             ^~
lib/cccb/modules/tables.rb:155: syntax error, unexpected '|', expecting '='
...| r.include? i } }.map do |r,d|
...                              ^
lib/cccb/modules/tables.rb:158: syntax error, unexpected `when', expecting `end'
      when "remove"
      ^~~~
lib/cccb/modules/tables.rb:182: syntax error, unexpected `end', expecting end-of-input
  end
  ^~~
Failed to load lib/cccb/modules/twitter_message.rb: cannot load such file -- mechanize
Failed to load lib/cccb/modules/links.rb: cannot load such file -- dbi
Did you mean?  dbm
FATAL :CCCB::Core::Bot: Missing feature 'reply'
["/home/dicebot/lib/module/requirements.rb:172:in `block in requirements'",
 "/home/dicebot/lib/module/requirements.rb:167:in `map'"]