reducing the default number of cores to 1

install

@@ -195,7 +195,7 @@ if [ $sq -eq 0 ]; then
   possible_solutions "${commands[@]}"
 fi
 
-ncore=4
+ncore=1
 echo -e "\033[1mHow many core you want to use to install the dependencies?\033[0m"
 if [ $sq -eq 0 ]; then
   read ncore