added help message to django.generate

modules/django.py

@@ -380,7 +380,7 @@ def generate_scripts(template_name, make_copy=False):
 
 
 @task
-def generate(param=None, make_copy=False):
+def generate(param="help", make_copy=False):
     """
     param can be one of settings, local, wsgi
     make_copy must be set to True if you want it to actually do anthing
@@ -392,12 +392,28 @@ def generate(param=None, make_copy=False):
 
     make_copy = booleanize(make_copy)
 
-    if param and param not in PARAM_LIST:
-        err_msg = "You asked to generate %s, that value isn't available" \
-            " possible script values available: %s" % (param, PARAM_LIST)
+    if param:
 
-        import sys
-        sys.exit(err_msg)
+        err_msg = None
+
+        if param == "help":
+            err_msg = """
+
+    fab django.generate:param="help",make_copy=False
+
+        param - file to be generated can be of type: %s
+
+        make_copy - determines whether or generate copies the generated file
+                into it's practical location (otherwise doesn't do anything)
+            """ % PARAM_LIST
+
+        elif param not in PARAM_LIST:
+            err_msg = "You asked to generate %s, that value isn't available" \
+                " possible script values available: %s" % (param, PARAM_LIST)
+
+        if err_msg:
+            import sys
+            sys.exit(err_msg)
 
     print("django:generate make_copy     : %s\n" % make_copy)
     print("django:generate script        : %s" % param)