Point to binary from docs

doc/index.rst

@@ -18,6 +18,29 @@ When you run this script, the following kernel is generated, compiled, and execu
 
 (See the full example for how to print the generated code.)
 
+Want to try out loopy?
+----------------------
+
+There's no need to go through :ref:`installation` if you'd just like to get a
+feel for what loopy is.  Instead, you may
+`download a self-contained Linux binary <https://gitlab.tiker.net/inducer/loopy/builds/1989/artifacts/browse/build-helpers/>`_.
+This is purposefully built on an ancient Linux distribution, so it should work
+on most versions of Linux that are currently out there.
+
+Once you have the binary, do the following::
+
+    chmod +x ./loopy-centos6
+    ./loopy-centos6 --target=opencl hello-loopy-lp.py
+    ./loopy-centos6 --target=cuda hello-loopy-lp.py
+    ./loopy-centos6 --target=ispc hello-loopy-lp.py
+
+Grab the example here: :download:`examples/python/hello-loopy.py <../examples/python/hello-loopy-lp.py>`.
+
+You may also donwload the most recent version by going to the `list of builds
+<https://gitlab.tiker.net/inducer/loopy/builds>`_, clicking on the newest one
+of type "CentOS binary", clicking on "Browse" under "Build Artifacts", then
+navigating to "build-helpers", and downloading the binary from there.
+
 Places on the web related to Loopy
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