add ability to force rbenv being shown

README.md

@@ -500,6 +500,10 @@ It figures out the version being used by taking the output of the `rbenv version
 * If `rbenv` is not in $PATH, nothing will be shown.
 * If the current Ruby version is the same as the global Ruby version, nothing will be shown.
 
+Variable | Default Value | Description |
+|----------|---------------|-------------|
+|`POWERLEVEL9K_RBENV_ALWAYS`|'false'|Always show rbenv version, even if global|
+
 ##### rspec_stats
 
 See [Unit Test Ratios](#unit-test-ratios), below.

powerlevel9k.zsh-theme

@@ -1047,11 +1047,15 @@ prompt_rbenv() {
     local rbenv_global="$(rbenv global)"
 
     # Don't show anything if the current Ruby is the same as the global Ruby.
-    if [[ $rbenv_version_name == $rbenv_global ]]; then
-      return
-    fi
-
+    # Unless POWERLEVEL_RBENV_ALWAYS is set.
+    set_default POWERLEVEL9K_RBENV_ALWAYS false
+    if [[ $POWERLEVEL9K_RBENV_ALWAYS == true || $rbenv_version_name != $rbenv_global ]];then
       "$1_prompt_segment" "$0" "$2" "red" "$DEFAULT_COLOR" "$rbenv_version_name" 'RUBY_ICON'
+    #elif [[ $rbenv_version_name != $rbenv_global ]]; then
+    #  "$1_prompt_segment" "$0" "$2" "red" "$DEFAULT_COLOR" "$rbenv_version_name" 'RUBY_ICON'
+    #else
+    #  return  
+    fi
   fi
 }