added iOS tools and firmwares

base for our nexmon_jammer project, that will be presented at WiSec 2……017.

Couple of changes for the bcm43438 of the raspberry pi. You can now n……ormally use your wifi interface and activate monitor mode with nexutil.

app: bux fixes and socat

app: minior update to get more flexible firmware selection.

app: release of app version 2.1.1

New app release completely built from our sources in the repository (……libwireshark and its dependencies is still precompiled). Building everything from this repo simplifies having only a to keep consistent versions of app, firmware and tools.

added README to nexutil folder