Media Mover Custom Command Module

I made first version of new module for Media Mover which gives user ability to run custom commands.

Will it be better as separate project or it can be part of Media Mover package?

Media Mover Custom Command
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Allow user to define custom commands for process, storage and complete actions.
Module uses tokens to provide easy access to file values.

Dependencies
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- media_mover_api
- mm_token

Install
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1) Copy the mm_custom_command folder to the modules folder in your installation.

2) Enable the module using Administer -> Modules (/admin/build/modules).

3) Go to Media Mover configuration where you want to use custom command and 
   choose "Custom Command: Use custom command".

4) Set 'Output file' and 'Command'.

Examples
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Encode files with Sorenson Squeeze 5 on Windows machine running Drupal
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- Create your Media Mover configuration
- For process action choose "Custom Command: Use custom command"
- Set 'Output file' for example 'video-[nid].flv'
- Set command. Because I didn't find parameter for Squeeze to set output file I
  will use batch file 'compress-video.bat' which will after encoding rename
  output file. So command will look like this:
  'd:\compress-video.bat [harvest_file] [output_file]'

Rename/move file
----------------
- Create your Media Mover configuration
- For storage action choose "Custom Command: Use custom command"
- Set 'Output file' for example 'video-[nid].flv'
- Set 'Command' to 'mv [process_file] [output_file]'

....

Todo:
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- make validation of config values
- create permissions to set if user can use Custom Command or not
- ...