move to using docs directory

docs/using/octopack.md

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+
+# More Packaging
+
+# Using OctoPack
+
+In order to automatically construct your nuget packages you can use [OctoPack](https://github.com/OctopusDeploy/OctoPack).  Octopack allows you to specify a .nuspec file which will be used to specify how your .nupkg should be created.
+
+Follow the core instructions for creating your .nuspec file on the  [OctoPack](https://github.com/OctopusDeploy/OctoPack) page.
+
+You'll then need to add a files specification to match Squirrel's expected .nupkg structure:
+
+~~~
+  <files>
+    <file src="bin\Release\*.*" target="lib\net45\" exclude="bin\release\*.pdb;bin\release\*.nupkg;bin\release\*.vshost.*"/>
+  </files>
+~~~
+
+If you're building using Visual Studio, you will also need to edit your .csproj file to include a property group.
+~~~
+  <PropertyGroup>
+    <RunOctoPack>true</RunOctoPack>
+  </PropertyGroup>
+~~~
+
+If you're using a build server, see OctoPack's guides on how to trigger it to be run.