add readme

README.md

+# Newline 2021: Nintendo hacking: dumping the DSi boot ROMs
+
+## Links
+
+* [Presentation PDF (no notes)](https://git.titandemo.org/PoroCYon/nl21brom/uploads/541b858ef2a83f8f13cf066b196a95b3/nl21brom-pres.pdf)
+* [Presentation PDf (with notes)](https://git.titandemo.org/PoroCYon/nl21brom/uploads/ea6d5c7dbd4c83b26294a4365b958307/nl21brom.pdf)
+
+
+* [Newline schedule entry](https://events.hackerspace.gent/en/newline2021/public/events/72)
+* [ARM7 payload code](https://git.titandemo.org/PoroCYon/dsi-bios-payload/)
+* [ARM7 ROM No-intro db entry](https://datomatic.no-intro.org/index.php?page=show_record&s=54&n=z005)
+
+## Compile
+
+Build the slides from source (requires latexmk etc):
+
+```
+make
+```
+