Add some notes about building libbladeRF to the README.

README.md

@@ -8,6 +8,26 @@ It is designed to build as a Debian package.
 
 ## Building under jessie
 
+### Dependencies - bladeRF
+
+You will need a build of libbladeRF. You can build packages from source:
+
+$ git clone https://github.com/Nuand/bladeRF.git
+$ cd bladeRF
+$ dpkg-buildpackage -b
+
+Or Nuand has some build/install instructions including an Ubuntu PPA
+at https://github.com/Nuand/bladeRF/wiki/Getting-Started:-Linux
+
+Or FlightAware provides armhf packages as part of the piaware repository;
+see https://flightaware.com/adsb/piaware/install
+
+### Dependencies - rtlsdr
+
+This is packaged with jessie. "sudo apt-get install librtlsdr-dev"
+
+### Actually building it
+
 Nothing special, just build it ("dpkg-buildpackage -b")
 
 ## Building under wheezy
@@ -15,3 +35,4 @@ Nothing special, just build it ("dpkg-buildpackage -b")
 First run "prepare-wheezy-tree.sh". This will create a package tre in
 package-wheezy/. Build in there ("dpkg-buildpackage -b")
 
+The wheezy build does not include bladeRF support.