Update README to last version

Author: martignoni

README.md

@@ -12,10 +12,11 @@ The code is available at [https://github.com/martignoni/moodlebox](https://githu
 
 An [prepared disk image](https://fricloud.ch/index.php/s/bjU65EHe6jdFVT6/download) for your Raspberry Pi 3 is [available](https://fricloud.ch/index.php/s/bjU65EHe6jdFVT6/download).
 
-SHA1 fingerprint of the disk image: becd79e10d48d9d2b8e0d20a1cfc49ab102cabc7
+SHA1 fingerprint of the disk image: 44c699a91c39c204dfe4ee4944f54627cd76c151
 
 ### Release notes
 
+* 2016-06-26, version 1.0b (beta): added two folder as RAM disks, for better performance
 * 2016-06-19, version 1.0a2 (alpha): reorganisation of project
 * 2016-06-16, version 1.0a1 (alpha): first version