my customized lib

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+# Easy Connect - Easily add all supported connectivity methods to your mbed OS project
+
+Often you want to give users of your application the choice to switch between connectivity methods. The `NetworkInterface` API makes this easy, but you'll still need a mechanism for the user to chooce the method, throw in some `#define`'s, etc. Easy Connect handles all this for you. Just declare the desired connectivity method in your `mbed_app.json` file, and call `easy_connect()` from your application.
+
+## Specifying connectivity method
+
+Add the following to your ``mbed_app.json`` file:
+
+```json
+{
+    "config": {
+        "network-interface":{
+            "help": "options are ETHERNET,WIFI_ESP8266,MESH_LOWPAN_ND,MESH_THREAD",
+            "value": "ETHERNET"
+        }
+    },
+    "target_overrides": {
+        "*": {
+            "target.features_add": ["NANOSTACK", "LOWPAN_ROUTER", "COMMON_PAL"],
+            "mbed-mesh-api.6lowpan-nd-channel-page": 0,
+            "mbed-mesh-api.6lowpan-nd-channel": 12
+        }
+    }
+}
+```
+
+If you choose `WIFI_ESP8266`, you'll also need to add the WiFi SSID and password:
+
+```json
+    "config": {
+        "network-interface":{
+            "help": "options are ETHERNET,WIFI_ESP8266,MESH_LOWPAN_ND,MESH_THREAD",
+            "value": "WIFI_ESP8266"
+        },
+        "esp8266-tx": {
+            "help": "Pin used as TX (connects to ESP8266 RX)",
+            "value": "PTD3"
+        },
+        "esp8266-rx": {
+            "help": "Pin used as RX (connects to ESP8266 TX)",
+            "value": "PTD2"
+        },
+        "esp8266-ssid": {
+            "value": "\"SSID\""
+        },
+        "esp8266-password": {
+            "value": "\"Password\""
+        },
+        "esp8266-debug": {
+            "value": true
+        }
+    }
+```
+
+If you use `MESH_LOWPAN_ND` or `MESH_THREAD` you will need to specify your radio module:
+
+```json
+    "config": {
+        "network-interface":{
+            "help": "options are ETHERNET,WIFI_ESP8266,MESH_LOWPAN_ND,MESH_THREAD",
+            "value": "MESH_LOWPAN_ND"
+        },
+        "mesh_radio_type": {
+        	"help": "options are ATMEL, MCR20",
+        	"value": "ATMEL"
+        }
+    }
+```
+
+## Using Easy Connect from your application
+
+Easy Connect has just one function which will either return a `NetworkInterface`-pointer or `NULL`:
+
+```cpp
+#include "easy-connect.h"
+
+int main(int, char**) {
+    NetworkInterface* network = easy_connect(true); /* has 1 argument, enable_logging (pass in true to log to serial port) */
+    if (!network) {
+        printf("Connecting to the network failed... See serial output.\r\n");
+        return 1;
+    }
+
+    // Rest of your program
+}
+```
+
+## Extra defines
+
+If you'd like to use Easy Connect with mbed Client then you're in luck. Easy Connect automatically defines the `MBED_SERVER_ADDRESS` macro depending on your connectivity method (either IPv4 or IPv6 address). Use this address to connect to the right instance of mbed Device Connector.