choco-pack: add page (#2063)

pages/windows/choco-pack.md

@@ -0,0 +1,15 @@
+# choco pack
+
+> Package a NuGet specification into a nupkg file.
+
+- Package a NuGet specification to a nupkg file:
+
+`choco pack {{path/to/specification}}`
+
+- Package a NuGet specification specifying the version of the resulting file:
+
+`choco pack {{path/to/specification}} --version {{version}}`
+
+- Package a NuGet specification to a specific directory:
+
+`choco pack {{path/to/specification}} --output-directory {{path/to/output_directory}}`