use markdown in readme

README.md

@@ -13,14 +13,13 @@ Configuration
 2. Give that user sudo permissions for calling virsh, so she may control (all)
    VMs:
 
-  <pre>
+    Defaults:vmadmin !requiretty
-  Defaults:vmadmin !requiretty
+    vmadmin ALL = (root) NOPASSWD: /usr/bin/virsh
-  vmadmin ALL = (root) NOPASSWD: /usr/bin/virsh</pre>
 
 3. For every one of your users, create a line in vmadmin's .ssh/authorized_keys
    using their SSH public keys:
 
-   <pre>command="/usr/local/bin/virssh myfancyvm",permitopen="localhost:5915",no-X11-forwarding,no-agent-forwarding ssh-rsa AAAAB...== myfancyuser@hjome</pre>
+    command="/usr/local/bin/virssh myfancyvm",permitopen="localhost:5915",no-X11-forwarding,no-agent-forwarding ssh-rsa AAAAB...== myfancyuser@hjome
 
    Instead of specifying only one VM "myfancyvm", you may also specify multiple
    VMs by regex, for example "(myfancyvm|myothervm)".
@@ -28,15 +27,14 @@ Configuration
 Usage
 =====
 
-  The user may now control her VM using the following commands:
+The user may now control her VM using the following commands:
 
-  <pre>
     ssh -t vmadmin@vmserver sudo virsh list
     ssh -t vmadmin@vmserver sudo virsh console myfancyvm
     ssh -t vmadmin@vmserver sudo virsh destroy myfancyvm
     ssh -t vmadmin@vmserver sudo virsh shutdown myfancyvm
     ssh -t vmadmin@vmserver sudo virsh start myfancyvm
-    ssh -t vmadmin@vmserver sudo virsh start myfancyvm --console</pre>
+    ssh -t vmadmin@vmserver sudo virsh start myfancyvm --console
 
-  If you use a "permitopen" directive, that user may also use the console 
+If you use a "permitopen" directive, that user may also use the console 
-  command to keep an SSH tunnel open to use VNC.
+command to keep an SSH tunnel open to use VNC.