levels	The scenes to be included in the build. If empty, the currently open scene will be built. Paths are relative to the project folder (AssetsMyLevelsMyScene.unity).
locationPathName	The path where the application will be built.
target	The BuildTarget to build.
options	Additional BuildOptions, like whether to run the built player.

Returns
string An error message if an error occurred.

Builds a player (Unity Pro only).

Use this function to programatically create a build of your project. Note that any references to GameObjects acquired in the editor script before the BuildPlayer call will be invalid after it and will need to be reacquired.

	// Build a folder containing unity3d file and html file
	@MenuItem ("Build/BuildWebplayer")
	static function MyBuild(){
		var levels : String[] = ["Assets/Scene1.unity", "Assets/Scene2.unity"];
		BuildPipeline.BuildPlayer( levels, "WebPlayerBuild", 
					   BuildTarget.WebPlayer, BuildOptions.None); 
	}