Add board docs

Author: hnhoan

README.md

@@ -38,19 +38,17 @@ external vendors' SDK and library required :
 
 [Micro-ECC](https://github.com/kmackay/micro-ecc) : Encryption library
 
-[MPU-9250 Motion_Driver](https://www.invensense.com/developers) : Create a user at https://www.invensense.com/developers. Under "Downloads" download "Embedded MotionDriver 6.12". Unzip the downloaded motion_driver_6.12 folder and navigate to motion_driver_6.12/mpl libraries/arm/gcc4.9.3. Unzip the require libraries and copy to folders indicated in the folder tree bellow (external/MPL/lib/...). For the include (.h) files, navigate to motion_driver_6.12/arm/STM32F4_MD6/Projects/eMD6 and copy core folder to external/MPL as indicated bellow.
-
 [ICM-20948 Motion_Driver](https://www.invensense.com/developers) : Create a user at https://www.invensense.com/developers. Under "Downloads" download "DK-20948 eMD-SmartMotion ...". Unzip the downloaded file and navigate to EMD-Core/sources. Copy the folder Invn to external/Invn as indected in the folder tree bellow.
 
 KSDK      : Kinetis SDK
 
 [BSEC](https://www.bosch-sensortec.com/bst/products/all_products/bsec) : Bosch Sensortec Environmental Cluster (BSEC) Software for #BME680 environmental sensor.  BSEC is needed for calculating Air Quality Index.  Go to https://www.bosch-sensortec.com/bst/products/all_products/bsec at the end of the page.  Select checkbox to accept license terms to download.  Unzip the the downloaded file. Rename the extracted folder BSEC and copy the whole folder to external as indicated in the folder tree bellow.  
 
-![IBK-BME680](https://www.i-syst.com/images/IBK-BME680_PinOut_640.png) 
+![BLUEIO-TAG-EVIM](https://www.i-syst.com/images/BLUEIO-TAG-EVIM_page.png) 
 
 <p align="center"> 
 
-[Bosch BME680 breakout board](https://www.tindie.com/products/hnhoan/bme680-temperature-pressure-humidity-gas-sensor/)
+[BLYST Nano sensor board](https://www.crowdsupply.com/i-syst/blyst-nano)
 
 </p>