replacing the old HTML user guide with a Sphinx-managed user guide
diff --git a/user_guide_src/source/general/quick_reference.rst b/user_guide_src/source/general/quick_reference.rst
new file mode 100644
index 0000000..b9108a5
--- /dev/null
+++ b/user_guide_src/source/general/quick_reference.rst
@@ -0,0 +1,11 @@
+#####################
+Quick Reference Chart
+#####################
+
+For a PDF version of this chart, `click
+here <http://codeigniter.com/download_files/ci_quick_ref.pdf>`_.
+
+.. figure:: ../images/ci_quick_ref.png
+ :align: center
+ :alt:
+