message: README: update link for latest dragonboard image
diff: @@ -25,7 +25,7 @@ For more details on building the SDK on an embedded platform please check the **
  | Platform | Documentation | GitHub master status | Downloads |
  | --------- | ----------- | ----------- | ----------- |
  -| DragonBoard 410c | [User Guide](doc/dragonboard410c/user_guide.md) | [![Build Status](https://travis-ci.org/analogdevicesinc/aditof_sdk.svg?branch=master)](https://travis-ci.org/analogdevicesinc/aditof_sdk) | [![SD card image](https://img.shields.io/badge/release-SD_card_image_v0.2-blue.svg)](http://swdownloads.analog.com/cse/aditof/aditof-v0.2-dragonboard410c-sdimage.tar.xz) |
  +| DragonBoard 410c | [User Guide](doc/dragonboard410c/user_guide.md) | [![Build Status](https://travis-ci.org/analogdevicesinc/aditof_sdk.svg?branch=master)](https://travis-ci.org/analogdevicesinc/aditof_sdk) | [![SD card image](https://img.shields.io/badge/release-latest_sd_card_image-blue.svg)](http://swdownloads.analog.com/cse/aditof/dragonboard410c-latest-image.tar.xz) |
  | Raspberry PI 3 | [User Guide](doc/raspberrypi3/user_guide.md) | [![Build Status](https://travis-ci.org/analogdevicesinc/aditof_sdk.svg?branch=master)](https://travis-ci.org/analogdevicesinc/aditof_sdk) | [![SD card image](https://img.shields.io/badge/release-SD_card_image_v0.1-blue.svg)](http://swdownloads.analog.com/cse/aditof/aditof-v0.1-raspberrypi3-sdimage.tar.xz) |
  [How to write the SD card image onto the SD card?](doc/sdcard_burn.md)
  