Docs updates [2017-12-18]

docs/in-depth/cookbook/one-line-powershell.md

@@ -0,0 +1,19 @@
+# One-line PowerShell setup
+
+> **TODO:** Make sure this works with v3.0.
+
+[@ChrisTaylorRocks](https://github.com/ChrisTaylorRocks) has made a PowerShell script to get the starter kit up and running with a single command. Go check it out [here](https://github.com/ChrisTaylorRocks/screeps-typescript-starter-setup)!
+
+## Usage
+
+PowerShell < 5.0:
+
+```
+PS> (new-object Net.WebClient).DownloadString('http://bit.ly/2z2QDJI') | iex; New-ScreepsTypeScriptSetup
+```
+
+PowerShell 5.0+:
+
+```
+PS> curl http://bit.ly/2z2QDJI | iex; New-ScreepsTypeScriptSetup
+```