BOOST_FOREACH compilation error within ~/lib/source_impl.cc and ~/lib/sink_impl.cc

[stevenlkinney]

Hello,

    I cloned the Nuand gr-osmosdr repo and followed the build steps, typical cmake, make -jx, make install... and the ~/lib/source_impl.cc and ~/lib/sink_impl.cc failed to compile when hitting the BOOST_FOREACH call, complained about an undefined function.  I noticed that neither file includes the <boost/foreach.hpp> file, editing these files to include boost/foreach.hpp corrected the compilation error and, after installation, the Nuand forked osmosdr library worked within gnuradio-companion; BTW, I am syncing two bladeRFs (A4 and A9) and capturing four RX channels for coherency testing. 

Not sure if there is another, more graceful workaround in cmake, but the following the README.md build procedure does not produce a successful compilation without making above described changes.