Document Scratchpad.

README.md

@@ -12,3 +12,9 @@ New Fortress uses Intel's 2001/2002 EFI compression method as documented in `res
 Newer versions of this compression do not seem to work. CCR apparently copy-pasted this code into their `CCompress`
 class, converting global variables to instance data and modifying it further to decompress in blocks. A rewrite of this
 is found in `Syroot.Fortress.Compressor`, it exports the `Decompress` method for use by other libraries and apps.
+
+## Scratchpad
+
+This app currently searches for all `*.spr` files in a directory (which is specified in the source), and creates a
+directory for each sprite file. It then converts each frame of it as a PNG file with the file name pattern
+`{frame}_X{origin}_Y{origin}.{shareIndex}.png`.