Update README.md

added SDK links

README.md

@@ -14,5 +14,9 @@
 * Mainboard backside: ![Mainboard with RX TX](../master/images/mijia_720p_360/Backside_with_SoC.jpg) 
 * CPU: GM8135S http://www.grain-media.com/html/8136S_8135S.htm
 ## Software
-* SDK: "GM8136 SDK release v1.0.rar" http://pan.baidu.com/share/link?uk=2553453276&shareid=3324610145
+* SDK: "GM8136 SDK release v1.0.rar" 
+** https://drive.google.com/file/d/0B40VEajjRUcHTmNuN2N0R3dWaUk/view?usp=sharing
+** https://mega.nz/#!Ml9mhQwJ!h4WUydoOc7gGpUSkNCYpzd9uAOyUloHHMvikItL2FS8
+** https://www.dropbox.com/s/hnh8cydk4m2ab08/GM8136%20SDK%20release%20v1.0.rar?dl=0
+** http://pan.baidu.com/share/link?uk=2553453276&shareid=3324610145
 * UART-Boot-Log: https://pastebin.com/raw/nt4GUAeF thanks @kollaesch