fix parameter description

acast2/src/acast.cpp

@@ -24,7 +24,7 @@ int main(int argc, char** argv) {
 		TCLAP::CmdLine cmd("cast binary", ' ', "0.01");
-		TCLAP::ValueArg<std::string> input(	"i",	"input",	"Input to echo",	false,	"-",		"file");
+		TCLAP::ValueArg<std::string> input(	"i",	"input",	"Input to cast",	false,	"-",		"file");
 		cmd.add( input );
 		TCLAP::ValueArg<std::string> type(	"t",	"type",		"Output type",		true,	"",		"string");