AP_Scripting: add some pointers on how to work with bindings

libraries/AP_Scripting/README.md

@@ -47,3 +47,9 @@ end
 
 return update, 1000 -- request to be rerun again 1000 milliseconds (1 second) from now
 ```
+
+## Working with bindings
+
+Edit bindings.desc
+
+cd into the generator subdirectory and type `make run`

libraries/AP_Scripting/generator/src/main.c

@@ -1724,7 +1724,7 @@ int main(int argc, char **argv) {
     error(ERROR_GENERAL, "Unable to open the output source file: %s", file_name);
   }
 
-  fprintf(source, "// auto generated bindings, don't manually edit\n");
+  fprintf(source, "// auto generated bindings, don't manually edit.  See README.md for details.\n");
   
   trace(TRACE_GENERAL, "Sanity checking parsed input");
 
@@ -1773,7 +1773,7 @@ int main(int argc, char **argv) {
   }
   free(file_name);
   fprintf(header, "#pragma once\n");
-  fprintf(header, "// auto generated bindings, don't manually edit\n");
+  fprintf(header, "// auto generated bindings, don't manually edit.  See README.md for details.\n");
   emit_headers(header);
   fprintf(header, "#include \"lua/src/lua.hpp\"\n");
   fprintf(header, "#include <new>\n\n");