Merge pull request #627 from ehazlett/hyper-v-docs

add back hyper-v docs to user guide

docs/index.md

@@ -701,6 +701,28 @@ image by default. Note, this image is not available in the Chinese regions. In C
 
 You may need to `machine ssh` in to the virtual machine and reboot to ensure that the OS is updated.
 
+#### Microsoft Hyper-V
+
+Creates a Boot2Docker virtual machine locally on your Windows machine
+using Hyper-V.  [See here](http://windows.microsoft.com/en-us/windows-8/hyper-v-run-virtual-machines)
+for instructions to enable Hyper-V. You will need to use an
+Administrator level account to create and manage Hyper-V machines.
+
+> **Note**: You will need an existing virtual switch to use the
+> driver.  Hyper-V can share an external network interface (aka
+> bridging), see [this blog](http://blogs.technet.com/b/canitpro/archive/2014/03/11/step-by-step-enabling-hyper-v-for-use-on-windows-8-1.aspx).
+> If you would like to use NAT, create an internal network, and use
+> [Internet Connection
+> Sharing](http://www.packet6.com/allowing-windows-8-1-hyper-v-vm-to-work-with-wifi/).
+
+Options:
+
+ - `--hyper-v-boot2docker-location`: Location of a local boot2docker iso to use. Overrides the URL option below.
+ - `--hyper-v-boot2docker-url`: The URL of the boot2docker iso. Defaults to the latest available version.
+ - `--hyper-v-disk-size`: Size of disk for the host in MB. Defaults to `20000`.
+ - `--hyper-v-memory`: Size of memory for the host in MB. Defaults to `1024`. The machine is setup to use dynamic memory.
+ - `--hyper-v-virtual-switch`: Name of the virtual switch to use. Defaults to first found.
+
 #### Openstack
 Create machines on [Openstack](http://www.openstack.org/software/)