Added regarding issues opening Form 266 in the user's browser.

The current version of ARL Form 266 doesn't render correctly in some browsers.
The footnote warns users of this fact, as well as the fact that ARL is working
to correct the problem.

Author: ckaran

README.md

@@ -732,11 +732,11 @@ A local copy of the license is in the file [LICENSE.txt](LICENSE.txt).
 # <a name="D3DC705AC3C411E6BBB4003EE1B763F8"></a>Contributor License Agreement (CLA)
 
 The ARL Contributor License Agreement (ARL Form 266) can be found
-[here](ARL%20Form%20-%20266.pdf). Each external contributor must execute and return
-a copy for each project that he or she intends to contribute to.  Once ARL
-receives the executed form, it will remain in force permanently.  Thus,
-external contributors need only execute the form once for each project that
-they plan on contributing to.
+[here](ARL%20Form%20-%20266.pdf)<sup>[1](#Footnote_11)</sup>. Each external
+contributor must execute and return a copy for each project that he or she
+intends to contribute to.  Once ARL receives the executed form, it will remain
+in force permanently.  Thus, external contributors need only execute the form
+once for each project that they plan on contributing to.
 
 # <a name="D18EB61EC23E11E692E5003EE1B763F8"></a>Legal Analysis - Software Protection & Release Mechanisms
 
@@ -792,4 +792,9 @@ from within ARL; it MUST NOT be publically accessible!
 used within the Linux kernel, it will have been used by very few projects, but
 will have an extraordinary impact.
 
-
+<sup><a name="Footnote_11">11</a></sup> This form may not preview correctly in
+your browser.  If you have trouble opening the file, or if the file has a
+phrase similar to "Please wait... If this message is not eventually replaced
+by...", then try downloading the form and opening it in the latest version of
+Adobe® Acrobat Reader.  ARL is aware of the issue, and is working to correct
+the problem.