Add "Python on Unix" document, mostly written for GHOP
by Shriphani Palakodety.
diff --git a/Doc/using/index.rst b/Doc/using/index.rst
index e2fa4b4..ac5fd3c 100644
--- a/Doc/using/index.rst
+++ b/Doc/using/index.rst
@@ -13,6 +13,7 @@
 .. toctree::
 
    cmdline.rst
+   unix.rst
    windows.rst
    mac.rst