Add chocolatey and powershell instructions.

README.md

@@ -30,7 +30,18 @@ Dependencies:
 $ brew install hub
 $ hub version
 git version 1.7.6
-hub version 2.2.0
+hub version 2.2.3
+```
+
+#### Chocolatey
+
+`hub` can be installed through [Chocolatey](https://chocolatey.org/) on Windows.
+
+``` sh
+> choco install hub
+> hub version
+git version 2.7.1.windows.2
+hub version 2.2.3
 ```
 
 #### Standalone
@@ -87,6 +98,30 @@ You should place this command in your `.bash_profile` or other startup script:
 eval "$(hub alias -s)"
 ```
 
+#### PowerShell
+
+If you're using PowerShell, you can set an alias for `hub` by placing the 
+following in your PowerShell profile (usually 
+`~/Documents/WindowsPowerShell/Microsoft.PowerShell_profile.ps1`):
+
+``` sh
+Set-Alias git hub
+```
+
+A simple way to do this is to run the following from the PowerShell prompt:
+
+``` sh
+Add-Content $PROFILE "`nSet-Alias git hub"
+```
+
+Note: You'll need to restart your PowerShell console in order for the changes to be picked up.
+
+If your PowerShell profile doesn't exist, you can create it by running the following:
+
+``` sh
+New-Item -Type file -Force $PROFILE
+```
+
 ### Shell tab-completion
 
 hub repository contains tab-completion scripts for bash and zsh. These scripts