Added flags explanation

Readme.md

@@ -211,6 +211,39 @@ iptables -w -I INPUT 5 -d <appvm_ip> -p tcp --dport <target_port> -m conntrack -
 #
 ```
 
+### Flags
+Flags explanation as produced from the `qvm-ls` utility:
+```
+        Type of domain.
+
+        0   AdminVM (AKA Dom0)
+        aA  AppVM
+        dD  DisposableVM
+        sS  StandaloneVM
+        tT  TemplateVM
+
+        When it is HVM (optimised VM), the letter is capital.
+
+        Current power state.
+
+        r   running
+        t   transient
+        p   paused
+        s   suspended
+        h   halting
+        d   dying
+        c   crashed
+        ?   unknown
+
+        Extra
+     	U   updateable
+     	N   provides_network
+     	R   installed_by_rpm
+     	i   internal
+     	D   debug
+     	A   autostart
+```
+
 ### Dev Environment
 Currently developing on VMWare Workstation on Windows due to issues in virtualizing on linux on my home hardware.
 QubesOS is virtualized behind NAT and can reach Windows Host via SSH.