doc updates for C5 commands

CHANGELOG.rst

@@ -1,6 +1,11 @@
 OpenXC Python Library Changelog
 ===============================
 
+v0.13.0
+----------
+
+* Feature: Support for new C5 Cellular, SD, and RTC commands
+
 v0.12.0
 -----------
 

docs/tools/control.rst

@@ -60,6 +60,21 @@ Change the payload format to Protocol Buffers, then back to JSON:
     $ openxc-control set --new-payload-format json
     $ openxc-control set --new-payload-format protobuf
 
+Change the time for the RTC unit on the C5 devices:
+
+.. code-block:: bash
+
+    $ openxc-control set --time 1461545558
+
+Set the host and port for the C5 Cellular device
+
+.. code-block:: bash
+
+    $ openxc-control set --host www.server.com --port 80
+
+This will return true when successful. If host is supplied, but not port, 
+port will default to 80.
+
 ------
 write
 ------
@@ -96,6 +111,21 @@ a message with a lower ID using the extended frame format, you can use the
     must allow writing the specific message that you request with
     ``openxc-control``.
 
+
+---------------
+sd_mount_status
+---------------
+
+This queries the device to see if the SD card is mounted correctly. 
+
+.. code-block:: bash
+
+    $ openxc-control sd_mount_status 
+
+This will return 'True' if the SD card is available for writing. Otherwise, it will return 'False'.
+
+
+
 Command-line options
 ====================