Update README with the latest features.

[nageru] / bmusb

diff --git a/bmusb b/bmusb
index 6790c4a2d84ebf265dd0a3cbfe4e99e0ba3314b7..12fc3ca26e888caa54fcf1ad6e47593b3f39f6d4 160000 (submodule)
--- a/bmusb
+++ b/bmusb
@@ -1 +1 @@
-Subproject commit 6790c4a2d84ebf265dd0a3cbfe4e99e0ba3314b7
+Subproject commit 12fc3ca26e888caa54fcf1ad6e47593b3f39f6d4