Merge branch 'master' of github.com:mfontanini/libtins into develop

Conflicts:
	examples/dns_stats.cpp
	include/tins/sniffer.h
	src/sniffer.cpp

examples/dns_stats.cpp

@@ -204,7 +204,7 @@ int main(int argc, char* argv[]) {
             auto info = monitor.stats().get_information();
             cout << "\rAverage " << info.average.count() 
                 << "ms. Worst: " << info.worst.count() << "ms. Count: "
-                << info.count;
+                << info.count << "   ";
             cout.flush();
             sleep_for(seconds(1));
         }