Error Running Phpdoc on ubuntu [closed]

After downloading phpDoc by composer.phar What happened in a very successful way. I try to run:

~$ ./phpdoc

In Terminal and I get the following error message:

ubuntualex@ubuntualex-VirtualBox:~/vendor/bin$ ./phpdoc
Collecting files .. OK
Initializing parser .. OK
Parsing files



  [Exception]                                                                      
  No parsable files were found, did you specify any using the -f or -d parameter?  



project:run [-t|--target[="..."]] [-f|--filename[="..."]] [-d|--directory[="..."]] [--encoding[="..."]] [-e|--extensions[="..."]] [-i|--ignore[="..."]] [--ignore-tags[="..."]] [--hidden] [--ignore-symlinks] [-m|--markers[="..."]] [--title[="..."]] [--force] [--validate] [--visibility[="..."]] [--defaultpackagename[="..."]] [--sourcecode] [-p|--progressbar] [--template[="..."]] [--parseprivate] [--log[="..."]]

I'm using composer 7.22 and Php 5.3 and Ubuntu 12.04

Which part should I configure or am I running the wrong command?