[PATCH 2/2] Update documentation for http.continue option

["brian m. carlson" <sandals@crustytoothpaste.net>]

Explain the reason for and behavior of the new http.continue option, and that it
is enabled by default.  Furthermore, explain that it is required for large
GSS-Negotiate requests but incompatible with some proxies.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 Documentation/config.txt | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/config.txt b/Documentation/config.txt
index fca7749..5fff2b2 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1516,6 +1516,15 @@ http.postBuffer::
 	massive pack file locally.  Default is 1 MiB, which is
 	sufficient for most requests.
 
+http.continue::
+	Ensure that authentication succeeds before sending the pack data when
+	POSTing data using the smart HTTP transport.  This is done by
+	requesting a 100 Continue response.  For requests larger than
+	'http.postBuffer', this is required when using GSS-Negotiate
+	(Kerberos) authentication over HTTP.  However, some proxies do not
+	handle the protocol exchange gracefully; for them, this option must be
+	disabled.  Defaults to enabled.
+
 http.lowSpeedLimit, http.lowSpeedTime::
 	If the HTTP transfer speed is less than 'http.lowSpeedLimit'
 	for longer than 'http.lowSpeedTime' seconds, the transfer is aborted.
-- 
1.8.4.rc3