Add ruby-info to smiley theme

modules/prompt/functions/prompt_smiley_setup

@@ -27,6 +27,11 @@ function prompt_smiley_precmd {
   if (( $+functions[python-info] )); then
     python-info
   fi
+
+  # Get Ruby version information.
+  if (( $+functions[ruby-info] )); then
+    ruby-info
+  fi
 }
 
 function prompt_smiley_setup {
@@ -42,6 +47,9 @@ function prompt_smiley_setup {
   # Set python-info parameters.
   zstyle ':prezto:module:python:info:virtualenv' format '%F{yellow}[%v]%f '
 
+  # Set ruby-info parameters.
+  zstyle ':prezto:module:ruby:info:version' format '%F{yellow}[%v]%f '
+
   # Set git-info parameters.
   zstyle ':prezto:module:git:info' verbose 'yes'
   zstyle ':prezto:module:git:info:branch' format '%F{blue}%b%f'
@@ -49,7 +57,7 @@ function prompt_smiley_setup {
   zstyle ':prezto:module:git:info:keys' format 'prompt' '(%b%D)'
 
   # Define prompts.
-  PROMPT='$python_info[virtualenv]${git_info[prompt]} %B%c%b %(?:%F{green}ツ%f:%F{red}✖%f) '
+  PROMPT='$python_info[virtualenv]$ruby_info[version]${git_info[prompt]} %B%c%b %(?:%F{green}ツ%f:%F{red}✖%f) '
   RPROMPT='${editor_info[overwrite]}${VIM:+" %B%F{green}V%f%b"}'
   SPROMPT='zsh: correct %F{red}%R%f to %F{green}%r%f [nyae]? '
 }