fix help message

Makefile.in

@@ -425,13 +425,13 @@ vogl:
 install:
 	@echo "There is no official install from the root menu"
 	@echo "see also src/scripts/bootstrap how to bootstrap NEMO"
-	@echo "      or docs/test_a_new_nemo_git"
+	@echo "      or docs/install_nemo"
 	@echo ""
 	@echo "Typically you would do the following: (example for (t)csh)"
-	@echo "      ./configure  ....      -- run configure, with lots of options"
-	@echo "      source nemo_start.csh"
+	@echo "      ./configure  ....      -- run configure, with lots of options; try --help"
+	@echo "      source nemo_start.csh  -- or .sh for bash"
 	@echo "      make postconfig        -- basic post configure things"
-	@echo "      rehash                 -- update search path" 
+	@echo "      rehash                 -- update search path (only for .csh)" 
 	@echo "      make libs              -- install the libraries"
 	@echo ""
 	@echo "If you want, test to compile two basic routines:"