README: document default boolean config values

Prior to this change, we documented the default values for some of the
boolean configuration options, but not all of the options.

Document the default values for all the remaining boolean config
options.

Author: ktdreyer

README

@@ -121,8 +121,8 @@ Configuration Directives
 Forces the authentication attempt to fail if the connection is not being
 established over TLS
 
-#### Example
-    GssapiSSLonly On
+- **Enable with:** GssapiSSLonly On
+- **Default:** GssapiSSLonly Off
 
 
 ### GssapiLocalName
@@ -137,8 +137,8 @@ When `GssapiLocalName` is set to `on`, mod_auth_gssapi will set the
 `REMOTE_USER` variable to the resolved user name. mod_auth_gssapi will also
 set the `GSS_NAME` variable to the complete client principal name.
 
-#### Example
-    GssapiLocalName on
+- **Enable with:** GssapiLocalName On
+- **Default:** GssapiLocalName Off
 
 
 ### GssapiConnectionBound
@@ -152,17 +152,17 @@ authentication to the connection in order to keep the state between
 round-trips.  With this option, incomplete context are stored in the
 connection and retrieved on the next request for continuation.
 
-#### Example
-    GssapiConnectionBound On
+- **Enable with:** GssapiConnectionBound On
+- **Default:** GssapiConnectionBound Off
 
 
 ### GssapiSignalPersistentAuth
 
 For clients that make use of Persistent-Auth header, send the header according
 to GssapiConnectionBound setting.
 
-#### Example
-    GssapiSignalPersistentAuth On
+- **Enable with:** GssapiSignalPersistentAuth On
+- **Default:** GssapiSignalPersistentAuth Off
 
 
 ### GssapiUseSessions
@@ -179,6 +179,9 @@ See the
 [mod_sessions](http://httpd.apache.org/docs/current/mod/mod_session.html)
 documentation for more information.
 
+- **Enable with:** GssapiUseSessions On
+- **Default:** GssapiUseSessions Off
+
 #### Example
     GssapiUseSessions On
     Session On
@@ -248,8 +251,8 @@ litter the filesystem if sessions are used.  An example sweeper can be found
 in the contrib directory.  If using with gssproxy, see note at the top of that
 file.
 
-#### Example
-    GssapiDelegCcacheUnique On
+- **Enable with:** GssapiDelegCcacheUnique On
+- **Default:** GssapiDelegCcacheUnique Off
 
 
 ### GssapiDelegCcacheEnvVar