put back -h option

src/ROCKparams.cpp

@@ -317,7 +317,7 @@ void ROCKparams::initFromMainOptsArgs(int argc,char ** argv) {
     // static int PE_separately=1;
     float proba=k_max_collision_proba;
 
-    while((i = getopt(argc, argv, "i:o:l:k:c:C:n:vq:m:f:")) != -1) {
+    while((i = getopt(argc, argv, "i:o:l:k:c:C:n:vhq:m:f:")) != -1) {
         switch(i) {
             case 0:
                 break;