add info about formats

man/fai-diskimage.8

@@ -1,5 +1,5 @@
 .\"                                      Hey, EMACS: -*- nroff -*-
-.TH fai-diskimage 8 "November 2017" "FAI 5.4"
+.TH fai-diskimage 8 "September 2018" "FAI 5.7"
 
 .SH NAME
 fai-diskimage \- create a disk image for booting a VM
@@ -8,9 +8,10 @@ fai-diskimage \- create a disk image for booting a VM
 .SH DESCRIPTION
 .B fai-diskimage
 creates a disk image that can be used with Qemu/KVM, VirtualBox,
-VMware, Xen or by your cloud infrastructure. It runs the Fully
+VMware, Xen, Android device or by your cloud infrastructure. It runs the Fully
 Automatic Installation using a list of FAI classes. In the end you
-have a bootable disk image.
+have a bootable disk image. Following formats are
+supported: .raw.xz, .raw.zst, .qcow2, .vdi, .vhdx, .vmdk, .simg.
 .SH OPTIONS
 .TP
 .B \-c, --class \fICLASS\fR[,\fICLASS\fR]
@@ -72,7 +73,7 @@ the fai-doc package.
  # fai-mk-configspace
 
 fai-diskimage is not limited to creating images for virtual
-machines. The raw images can also be copies (via dd) onto a real disk
+machines. The raw images can also be copied (via dd) onto a real disk
 for booting bare metal hosts.
 
 You can start fai-diskimage in a clean shell environment by calling: