Minor updates to the index page / README to match changes in repository (#76)

contents.
diff --git a/README.adoc b/README.adoc
index 64d45a6..6a81652 100644
--- a/README.adoc
+++ b/README.adoc
@@ -6,24 +6,24 @@
 of the registry at https://www.khronos.org/registry/cl/ ; commits to the
 master branch of this repository will be reflected there.
 
-Please file issues with the OpenCL API itself (specification bugs, feature
+Please file issues with the OpenCL API (specification bugs, feature
 requests, etc.) on the companion https://github.com/KhronosGroup/OpenCL-Docs
 repository.
 
-Issues that should be filed in *this* repository include reserving OpenCL
-enumerant ranges, adding OpenCL extension specifications, and problems with
-the content of the registry *itself*.
+Issues that should be filed in *this* repository include adding OpenCL
+extension specifications, and problems with the content of the registry
+*itself*.
 
 == Reserving OpenCL Enumerant Ranges
 
-OpenCL enumerants are documented in the specification repository
+OpenCL enumerants are now documented in the specification repository
 https://github.com/KhronosGroup/OpenCL-Docs in the file
 https://github.com/KhronosGroup/OpenCL-Docs/blob/master/xml/cl.xml
 
 New enumerant ranges can be allocated by proposing a pull request to master
-branch of that repository modifying `cl.xml`, following the
+branch of OpenCL-Docs modifying `cl.xml`, following the
 existing examples. Allocate ranges starting at the lowest free values
-available (search for "Reserved for vendor extensions"). Ranges are not
+available (search for "`Reserved for vendor extensions`"). Ranges are not
 officially allocated until your pull request is *accepted* into master
 branch of the OpenCL-Docs repository. At that point you can use values from
 your assigned range for API extensions.
@@ -69,8 +69,11 @@
 ** 'extensions/makeindex.py' - create HTML extension indices from 'registry.py'.
 ** 'extensions/nextfree.py' - determine the next free extension number in
    'registry.py'.
-* 'sdk/' - OpenCL reference pages and reference cards. There are separate sets
-  for each API version.
+* 'sdk/' - OpenCL reference pages and reference cards. There are separate
+  sets for each API version. The current (OpenCL 2.2) reference pages are
+  extracted from the OpenCL Specification, so problems with these pages
+  should be filed in the OpenCL-Docs repository - only the generated HTML
+  for the reference pages is published here.
 * 'specs/' - OpenCL specification documents.
 
 
diff --git a/index.php b/index.php
index 5646be7..a67b3ab 100644
--- a/index.php
+++ b/index.php
@@ -79,42 +79,6 @@
     time is determined as described in the README.md in that repository.
     </a>
 
-    <!--
-<ul>
-<li> All of the following headers should be present in a directory
-     <tt> CL/ </tt> (or <tt> OpenCL/ </tt> on MacOS X). The single
-     header file <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/opencl.h"> opencl.h </a> includes
-     other headers as appropriate for the target platform, and simply
-     including <tt> opencl.h </tt> should be all that most applications
-     need to do.
-
-     <ul>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/opencl.h"> opencl.h </a> -
-          OpenCL 2.2 Single Header File for Applications. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_platform.h"> cl_platform.h </a> -
-          OpenCL 2.2 Platform-Dependent Macros. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl.h"> cl.h </a> -
-          OpenCL 2.2 Core API Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_ext.h"> cl_ext.h </a> -
-          OpenCL 2.2 Extensions Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_egl.h"> cl_egl.h </a> -
-          OpenCL 2.2 Khronos EGL Extensions Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_dx9_media_sharing.h"> cl_dx9_media_sharing.h </a> -
-          OpenCL 2.2 Khronos OpenCL/Direct3D 9 Media Sharing Extensions
-          Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_d3d10.h"> cl_d3d10.h </a> -
-          OpenCL 2.2 Khronos OpenCL/Direct3D 10 Extensions Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_d3d11.h"> cl_d3d11.h </a> -
-          OpenCL 2.2 Khronos OpenCL/Direct3D 11 Extensions Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_gl.h"> cl_gl.h </a> -
-          OpenCL 2.2 Khronos OpenCL/OpenGL Extensions Header File. </li>
-     <li> <a href="https://raw.githubusercontent.com/KhronosGroup/OpenCL-Headers/master/opencl22/CL/cl_gl_ext.h"> cl_gl_ext.h </a> -
-          OpenCL 2.2 Vendor OpenCL/OpenGL Extensions Header File. </li>
-     </li>
-</ul>
-    -->
-
-
 <h6> OpenCL ICD and C++ Bindings Headers </h6>
 
 <ul>