Added code highlighting support in wiki, using this syntax:
tree26f3dc7e68a723cfe7dba800f89a341a467cc167
-rw-r--r-- 307 Rakefile
drwxr-xr-x - app
drwxr-xr-x - config
drwxr-xr-x - db
drwxr-xr-x - doc
drwxr-xr-x - extra
drwxr-xr-x - files
drwxr-xr-x - lang
drwxr-xr-x - lib
drwxr-xr-x - log
drwxr-xr-x - public
drwxr-xr-x - script
drwxr-xr-x - test
drwxr-xr-x - vendor