title: ZMQ Compilation problems for C++ examples
body: <p>I am trying to compile the ZMQ C++ source code examples provided at zmq.org (i.e. github.com/imatix/zguide.git). My OS is xubuntu and I installed ZMQ prerequisites which are libtool, autoconf, automake and uuid-dev package properly. I installed czmq as well. Compilation and linking of ZMQ itself was fine and libs are located properly under /usr/local/bin. Nevertheless, I am getting below compilation errors. Googling did not help much and I wonder if anyone knows a quick solution to these errors, which originates from the missing header file zmq.hpp. Thanks in advance.</p>
  
  <pre><code>   $./build all
     hwclient.cpp
     hwclient.cpp:6:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     hwserver.cpp
     hwserver.cpp:6:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     identity.cpp
     identity.cpp:7:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     lbbroker.cpp
     In file included from lbbroker.cpp:7:0:
     zhelpers.hpp:29:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     lpclient.cpp
     In file included from lpclient.cpp:6:0:
     zhelpers.hpp:29:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     lpserver.cpp
     In file included from lpserver.cpp:8:0:
     zhelpers.hpp:29:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     mdbroker.cpp
     In file included from zmsg.hpp:35:0,
               from mdbroker.cpp:7:
     zhelpers.hpp:29:19: fatal error: zmq.hpp: No such file or directory
     compilation terminated.
     mdclient.cpp
  </code></pre>
  
  <p>......</p>