Created extractFile (markdown)

extractFile.md

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+The Function `extractFile` contains 4 Parameters.
+
+`file` -> The Path to the Archive.
+
+`input` -> What exactly in the Archive should be extracted?
+
+`output` -> Where should it be extracted?
+
+`message` -> Message while extracting.
+
+You can find an example here:
+```
+		{
+			"type": "extractFile",
+			"file": "/Spritesheets.zip",
+			"input": "/",
+			"output": "/LeafEdit/",
+			"message": "Extracting SpriteSheets... please wait."
+		}