Added pkg-config file
diff --git a/pkg-config/jsoncpp.pc.in b/pkg-config/jsoncpp.pc.in
new file mode 100644
index 0000000..12edd79
--- /dev/null
+++ b/pkg-config/jsoncpp.pc.in
@@ -0,0 +1,10 @@
+prefix=@CMAKE_INSTALL_PREFIX@
+exec_prefix=${prefix}
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include
+
+Name: jsoncpp
+Description: A C++ library for interacting with JSON
+URL: https://github.com/open-source-parsers/jsoncpp
+Libs: -L${libdir} -ljsoncpp
+Cflags: -I${includedir}