WiSH-WalT.md

+For the WiSHFUL experiments you can clone `wishful-global-controller` and `wishful-local-controller` Walt images.
+The former is a X86 image and should be booted either by physical hardware or by a virtual node.
+
+`$ walt image clone wishful-global-controller`
+
+The later is a raspberry pi image and should be booted by a raspberry pi node.
+
+`$ walt image clone wishful-local-controller`