Rename README.txt to README.rst and convert to reStructuredText
diff --git a/release/makemacapp.in b/release/makemacapp.in
index 66a7f66..7aca33c 100644
--- a/release/makemacapp.in
+++ b/release/makemacapp.in
@@ -65,7 +65,7 @@
 install -m 644 release/Info.plist "$APPROOT/Contents/"
 
 install -m 644 $SRCDIR/LICENCE.TXT $TMPDIR/dmg/
-install -m 644 $SRCDIR/README.txt $TMPDIR/dmg/
+install -m 644 $SRCDIR/README.rst $TMPDIR/dmg/
 
 hdiutil create -fs HFS+ -volname $PACKAGE_NAME-$VERSION \
 	-srcfolder "$TMPDIR/dmg" \