Update FEATURE_BLE README

Remove all outdated information including supported services and old documentation links

Author: Jenny Plunkett

features/FEATURE_BLE/README.md

@@ -1,28 +1,8 @@
 # mbed Bluetooth Low Energy Stack
-This is the Github repo for the `BLE_API` used by developer.mbed.org. Please see the [mbed BLE Homepage](https://developer.mbed.org/teams/Bluetooth-Low-Energy/) for all documentation, code examples and general help.
-
-# Supported Services
-Supported GATT services and constantly being added and can be found in the [ble/services/](https://github.com/ARMmbed/ble/tree/master/ble/services) folder.
-
-Currently supported services include:
-* Battery
-* Device Firmware Update (DFU)
-* Device Information
-* Eddystone Configuration Service
-* Health Thermometer
-* Heart Rate
-* Link Loss
-* UART
-* UriBeacon
-* iBeacon
-
-The [documentation](https://docs.mbed.com/docs/ble-intros/en/latest/AdvSamples/Overview/)
-contains an overview on how to create new, application-specific services.
+This is the Github repo for the `BLE_API`. Please see the [Mbed OS Example BLE GitHub Repo](https://github.com/ARMmbed/mbed-os-example-ble) for all code examples and the [Mbed OS BLE API page](https://os.mbed.com/docs/latest/apis/bluetooth.html) for all code documentation and general help.
 
 # Getting Started
-The mbed BLE API is meant to be used in projects on developer.mbed.org. Please see examples and sample project files there.
-A good starting point are these pages:
-* [mbed BLE Homepage](https://developer.mbed.org/teams/Bluetooth-Low-Energy/) for all things BLE
-* [mbed BLE Getting Started Guide](https://developer.mbed.org/forum/team-63-Bluetooth-Low-Energy-community/topic/5262/) a wonderful primer on using BLE with mbed
-* [mbed BLE doc](https://docs.mbed.com/docs/ble-intros/en/latest/) for an introduction to mbed BLE
-* [mbed BLE API page](https://docs.mbed.com/docs/ble-api/en/latest/api/index.html) for the Doxygen API documentation
+* [Mbed OS Examples](https://os.mbed.com/teams/mbed-os-examples/) for all Mbed OS and BLE examples
+* [Mbed OS Example BLE GitHub repo](https://github.com/ARMmbed/mbed-os-example-ble) for all Mbed OS BLE examples
+* [Mbed OS BLE introduction](https://os.mbed.com/docs/latest/apis/ble.html) for an introduction to Mbed BLE
+* [Mbed OS BLE API page](https://os.mbed.com/docs/latest/apis/bluetooth.html) for the Mbed BLE API documentation