Enable override default headers from CLI

Author: pkrolikowski

hyper/cli.py

@@ -167,9 +167,9 @@ def set_request_data(args):
             if i.key:
                 headers[i.key] = i.value
             else:
-            # when overriding a HTTP/2 special header there will be a leading 
-            # colon, which tricks the command line parser into thinking 
-            # the header is empty
+                # when overriding a HTTP/2 special header there will be a leading 
+                # colon, which tricks the command line parser into thinking 
+                # the header is empty
                 k, v = i.value.split(':', 1)
                 headers[':' + k] = v
         elif i.sep == SEP_QUERY: