add release notes for v0.1 release

this is the release notes for v0.1,   will add a link to attach change log for people review detail

doc/v0.1/release-note.rst

@@ -0,0 +1,114 @@
+ACRN V0.1 release note
+
+
+Main features supported in this release:
+
+Acrnctl
+Acrntrace
+Acrnlog
+sos lifecycle
+vSBL
+virtio-blk
+virtio-net
+USB passthru
+CSE passthru
+IOC sharing (incl. cbc attach, cbc driver)
+IPU passthru
+BT passthru
+SD card passthru
+audio passthru
+pre-emption
+surface sharing
+multi-plane, multi-pipe
+HDMI
+eDP
+
+Commands Supported by ACRN Hypervisor:
+
+Command
+help
+Provides helpful description about all available commands in hypervisor shell.
+
+vm_list
+Lists available VMs and displays the VM name, ID, and running state (“ON” for a running VM, and “OFF” otherwise).
+
+vm_console
+Switches the console from the hypervisor shell to a VM’s shell.
+
+set_loglevel
+set_loglevel <console_loglevel> [mem_loglevel] - Set loglevel[0-6]
+set log level so that people are able to get what they need from logout put, acrnlog defined 5 log levels, please refer to section 9.5 of Getting started guide 
+
+get_loglevel
+get the log level 
+
+logdump
+logdump <pcpu id> 
+
+dump log
+
+vmexit
+show vmexit profiling 
+
+dump_ioapic
+show native ioapic info
+
+vioapic
+vioapic <vm_id>
+show vioapic info
+
+int
+show interrupt info per CPU
+
+lsreq
+show ioreq info
+
+pt
+show pass-through device info
+
+vcpu_dumpmem
+vcpu_dumpmem <vm_id,vcpu_id, gva, length>
+
+dump memory for a specific vcpu
+
+vcpu_dumpreg
+vcpu_dumpreg <vm_id, vcpu_id>
+dump registers for a specific vcpu
+
+vcpu_list
+lists all VCPU in all VMs
+
+
+Known Issues:
+
+GPU – Preemption (Prioritized Rendering,
+Batch Preemption, QoS Rendering)
+Preemption feature works, but performance is not optimized yet. 
+
+Wifi
+Wifi not supported in guest OS
+
+Audio
+Audio pass-through to guest OS, but can only be validated on driver level, using command line or alsa-player, and only supports limited formats 
+
+CSME
+CSME pass-through to guest OS
+
+Graphic
+GVT-g is available, need to perform features after configured properly 
+
+Camera/IPU
+Camera works in Android guest. But camera app may crash after 5 mins
+
+SD card
+SD card works in Android guest, but does not support hot-plug.
+
+Surface Sharing
+Sometimes the window setup on Service OS takes up to 30 second
+
+stability
+Sometimes system hangs, especially when workload is high (e.g. running benchmarks, playing videos)
+
+Change log:
+
+