Unified version printing.

app/include/plasp-app/Command.h

@@ -6,6 +6,7 @@
 #include <cxxopts.hpp>
 
 #include <plasp-app/Utils.h>
+#include <plasp-app/Version.h>
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 //
@@ -55,6 +56,11 @@ class Command
 			std::cout << m_options.help(optionGroupNames) << std::endl;
 		}
 
+		void printVersion()
+		{
+			std::cout << Version << std::endl;
+		}
+
 		cxxopts::Options m_options;
 		std::tuple<OptionGroups...> m_optionGroups;
 };