Update README.md

README.md

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-## Playfield
+# Playfield
 This is a conversion of a piece of code from the *Amiga Hardware Reference Manual - Second Printing - July 1986 (page 55)* - under the heading "examples of forming basic playfields"
 
 Essentially it is a translation of Motorola 68000 assembly to C language code, utilising SDL2 obviously instead of banging the metal directly to display the output.
 
-### Compilation
+## Changelog
+* 09/01/2023 - Initial release
+
+## Compilation
 `cc playfield.c -lSDL2 -lm`
 
-### Author
+## Author
 Jason Bou-Samra
 
->For Fun, Not Status
+> {For Fun, Not Status}