asm-differ and autodecomp added as submodules (#48)

* Added auto decompiler.

* Added asm-differ.

* Delete diff.py

* Delete diff_settings.py

* Update README.md

diff_settings.py

@@ -1,14 +0,0 @@
-#!/usr/bin/env python3
-
-def add_custom_arguments(parser):
-    group = parser.add_mutually_exclusive_group(required=False)
-    group.add_argument('-u', dest='lang', action='store_const', const='us',
-            help="Set version to US.")
-
-def apply(config, args):
-    lang = args.lang or 'us'
-    config['mapfile'] = f'build/{lang}/mk64.{lang}.map'
-    config['myimg'] = f'build/{lang}/mk64.{lang}.z64'
-    config['baseimg'] = f'baserom.{lang}.z64'
-    config['makeflags'] = [f'VERSION={lang}']
-    config['source_directories'] = ['src', 'include']