examples/wakaama: Improve README

examples/wakaama/README.md

@@ -30,6 +30,14 @@ INFO LeshanServer - LWM2M server started at coap://0.0.0.0/0.0.0.0:5683 coaps://
 INFO LeshanServerDemo - Web server started at http://0.0.0.0:8080/.
 ```
 
+Additionally, you can specify a binding address for the Leshan server, using
+the `-lh` option. For instance, if you are connecting from a node via a Border
+Router, you might want to specify:
+
+```shell
+java -jar ./leshan-server-demo.jar -lh fd00:dead:beef::1
+```
+
 #### Bootstrap server
 LwM2M provides a bootstrapping mechanism to provide the clients with information
 to register to one or more servers. To test this mechanism both the previous server and a bootstrap server should be running. Eclipse Leshan also provides a bootstrap server demo.
@@ -63,9 +71,9 @@ To set up the configuration of the node and the server:
    listening. For now only `No security` mode can be used.
 
 ### Running the client
-The address set in `lwm2m.h` as `CONFIG_LWM2M_SERVER_URI` should be reachable
-from the node, e.g. either running on native with a tap interface or as a mote
-connected to a
+The address set as `CONFIG_LWM2M_SERVER_URI` (in `lwm2m.h` or via `menuconfig`)
+should be reachable from the node, e.g. either running on native with a tap
+interface or as a mote connected to a
 [border router](https://github.com/RIOT-OS/RIOT/tree/master/examples/gnrc_border_router).
 
 Also, if a bootstrap server is being used the macro `CONFIG_LWM2M_BOOTSTRAP` should be
@@ -74,15 +82,24 @@ defined as 1.
 The server URI for the example is being defined using the variable `SERVER_URI`
 in the Makefile, and can be changed when compiling.
 
-#### Compile and run
+#### Configure, compile and run
+
+The Wakaama package can be configured via Kconfig. Its options are placed
+under `Packages > Configure Wakaama LwM2M`. To access the configuration
+interface you can run:
+```
+make menuconfig
+```
+
 For debugging purposes there are two types of messages that can be enabled:
 - The lwm2m client adaptation debug can be enabled by setting `ENABLE_DEBUG` in
   `lwm2m_client.c` and `lwm2m_client_connection.c` to 1
-- The wakaama internal logging can be enabled by adding `CONFIG_LWM2M_WITH_LOGS` to the
-  CFLAGS (`CFLAGS += -DCONFIG_LWM2M_WITH_LOGS`)
+- The wakaama internal logging can be enabled by setting
+  `CONFIG_LWM2M_WITH_LOGS`, either on `menuconfig` or by adding it to CFLAGS
+  (`CFLAGS += -DCONFIG_LWM2M_WITH_LOGS`).
 
 For memory allocation the TLSF package is being used, with a private heap. If
-memory usage has to be tweaked the heap size can be modified via the macro
+memory usage has to be tweaked the heap size can be modified via the option
 `CONFIG_LWM2M_TLSF_BUFFER`.
 
 To compile run: