move files to support fisher plugin standards (#293)

functions/fish_title.fish

@@ -0,0 +1,34 @@
+# You can override some default title options in your config.fish:
+#     set -g theme_title_display_process no
+#     set -g theme_title_display_path no
+#     set -g theme_title_display_user yes
+#     set -g theme_title_use_abbreviated_path no
+
+function __bobthefish_title_user -S -d 'Display actual user if different from $default_user'
+    if [ "$theme_title_display_user" = 'yes' ]
+        if [ "$USER" != "$default_user" -o -n "$SSH_CLIENT" ]
+            set -l IFS .
+            hostname | read -l hostname __
+            echo -ns (whoami) '@' $hostname ' '
+        end
+    end
+end
+
+function fish_title
+    __bobthefish_title_user
+
+    if [ "$theme_title_display_process" = 'yes' ]
+        echo $_
+
+        [ "$theme_title_display_path" != 'no' ]
+        and echo ' '
+    end
+
+    if [ "$theme_title_display_path" != 'no' ]
+        if [ "$theme_title_use_abbreviated_path" = 'no' ]
+            echo $PWD
+        else
+            prompt_pwd
+        end
+    end
+end