Added Version definition to the pkg-config file
diff --git a/pkg-config/jsoncpp.pc.in b/pkg-config/jsoncpp.pc.in
index 12edd79..d8a61ac 100644
--- a/pkg-config/jsoncpp.pc.in
+++ b/pkg-config/jsoncpp.pc.in
@@ -5,6 +5,7 @@
 
 Name: jsoncpp
 Description: A C++ library for interacting with JSON
+Version: @JSONCPP_VERSION@
 URL: https://github.com/open-source-parsers/jsoncpp
 Libs: -L${libdir} -ljsoncpp
 Cflags: -I${includedir}