[gssdp] Add custom header functions to doc

[Jens Georg <jensgeorg src gnome org>]

commit 1cb428e95054cfe67ceff2f6e4bbfbda18684a89
Author: Jens Georg <mail jensge org>
Date:   Sun Jun 29 13:39:46 2014 +0200

    Add custom header functions to doc
    
    Signed-off-by: Jens Georg <mail jensge org>

 doc/gssdp-sections.txt |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/doc/gssdp-sections.txt b/doc/gssdp-sections.txt
index f891670..965538e 100644
--- a/doc/gssdp-sections.txt
+++ b/doc/gssdp-sections.txt
@@ -12,6 +12,9 @@ gssdp_client_get_host_ip
 gssdp_client_set_network
 gssdp_client_get_network
 gssdp_client_get_active
+gssdp_client_append_header
+gssdp_client_clear_headers
+gssdp_client_remove_header
 <SUBSECTION Standard>
 GSSDP_CLIENT
 GSSDP_IS_CLIENT