Fix the dev guide to use the correct indent (Tab => 4 Spaces) and add Modelines info

svn path=/trunk/; revision=47415

doc/README.developer

@@ -947,7 +947,7 @@ dissect_PROTOABBREV(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *d
 
 /* Register the protocol with Wireshark */
 
-/* this format is require because a script is used to build the C function
+/*  This format is require because a script is used to build the C function
     that calls all the protocol registration.
 */
 
@@ -1116,8 +1116,7 @@ PROTOSHORTNAME	An abbreviated name for the protocol; this is displayed
                 and in the dialog box for filter fields when constructing
                 a filter expression.
 PROTOABBREV     A name for the protocol for use in filter expressions;
-		it shall contain only lower-case letters, digits, and
-		hyphens.
+                it shall contain only lower-case letters, digits, and hyphens.
 FIELDNAME       The displayed name for the header field.
 FIELDABBREV     The abbreviated name for the header field. (NO SPACES)
 FIELDTYPE       FT_NONE, FT_BOOLEAN, FT_UINT8, FT_UINT16, FT_UINT24,
@@ -4085,3 +4084,15 @@ ptvcursor_set_subtree(ptvcursor_t* ptvc, proto_item* it, gint ett_subtree);
     Creates a subtree and adds it to the cursor as the working tree but does
 not save the old working tree.
 
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */