Add message after assembling iso finished.

pym/cl_builder.py

@@ -656,6 +656,11 @@ class cl_builder(color_print):
             self.printERROR(_("System building failed"))
             return False
         self.printSUCCESS(_("System has built successfully"))
+        if self.assembleIso:
+            self.printWARNING(_("If you want emerge packages manually in "
+                   "assembling system, please perform:"))
+            self.printWARNING("  cl-make -p %s -T"%
+                              self.clVars.Get('os_builder_profile'))
         return True
 
     def restoreMount(self):