Add README.md

.gitignore

@@ -1,39 +1,11 @@
-.vscode
-*.dat
-*.exe
-*.dll
-*.idb
-*.id0
-*.id1
-*.id2
-*.nam
-*.til
-*.o
-*.out
-*.elf
+__pycache__/
 *.dol
-*.a
-*.d
-*.map
-*.exe
 *.dump
-*.7z
-*.bat
-*.sln
-*.filters
-*.vcxproj
-*.user
-include/*.s
-
+*.exe
+*.map
 build/
-tools/mwcc_compiler/
+ctx.c
 tools/elf2dol
 tools/elf2rel
-decomp/
-errors.txt
-output.asm
-Debug/
-.vs/
-__pycache__/
-
-ctx.c
+tools/mwcc_compiler/*
+!tools/mwcc_compiler/.gitkeep