ofDirList - July 18th 2007 - by Theodore Watson
  
  Installation:
  1 Copy ofDirList.h and ofDirList.cpp to your ofAddons folder.
  2 Add #include <ofDirList.h> to ofAddons.h
  3 Add ofDirList.h and ofDirList.cpp to IDE
  
  Changes:
  1 Now takes string type as argument
  2 Fixed wildcard * for allowing all extensions
  3 Extensions are now case insensitive
  4 reset() function to clear extension list
  
  Example Usage:
  
  
//////////////////////////////////////////


  ofDirList DIR;
  
  //Allow only certain files
  //by specifying extension
  //Extensions are not case sensitive
  //so 'mov' allows both 'mov' and 'MOV'
  //To include all files either don't
  //call allowExt or specify the wildcard
  // '*'
  
  DIR.allowExt("mov");
  DIR.allowExt("jpg");
  
  //if you wish to keep the console quiet
  DIR.setVerbose(false);
  
  //now lets list the directory
  //listDir returns number of files found
  //with the specified extension
  int numFiles = DIR.listDir("images/");
  
  //you can now iterate through the files as you like
  for(int i = 0; i < numFiles; i++){
    printf("name is \%s - path is \%s \n", DIR.getName(i), DIR.getPath(i) );
  }
  
  //if you want to reuse ofDirList for different files
  //call reset(); to clear the allowed extensions