Depend on mbed-client-c

Author: Seppo Takalo

module.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "mbed-core": "~0.1.1",
     "mbed-client-libservice": "~3.0.0",
-    "mbed-client": "~0.1.3",
+    "mbed-client-c": "~0.1.6",
     "mbed-6lowpan-eventloop": "~0.0.8",
     "mbed-6lowpan": "~0.0.9"
   },