Merge pull request mfontanini#210 from ych/pc_config

Remove boost dependency from pkg-config template file

Author: mfontanini

cmake/cppkafka.pc.in

@@ -9,6 +9,6 @@ Url: https://github.com/mfontanini/cppkafka
 Description: C++ wrapper library on top of RdKafka
 Version: @CPPKAFKA_VERSION@
 Requires:
-Requires.private: rdkafka >= 0.9.4, boost
+Requires.private: rdkafka >= 0.9.4
 Libs: -L${libdir} -L${sharedlibdir} -lcppkafka
-Cflags: -I${includedir} -I${includedir}/cppkafka
+Cflags: -I${includedir} -I${includedir}/cppkafka -I@Boost_INCLUDE_DIRS@