Update the readme for C++14.

diff --git a/doc/readme.html b/doc/readme.html
index e117e5df2f86f5a308fc6c8cbe4e84634b7e4197..3a73cd3537aba050e54421610e32755ce68dfdef 100644 (file)
--- a/doc/readme.html
+++ b/doc/readme.html
@@ -53,9 +53,14 @@
     <h3>Supported platforms</h3>
 
     <p>
-        <acronym>deal.II</acronym> is mostly developed on Linux using the
-        <a href="http://gcc.gnu.org">GCC</a> compiler. However, it is not platform specific and we strive to keep the source code compliant with the <a href="https://www.iso.org/standard/50372.html">C++ 2011
-  Standard</a> (see also <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf">here</a> for a copy of the C++11 standard).
+      <acronym>deal.II</acronym> is mostly developed on Linux using the
+      <a href="http://gcc.gnu.org">GCC</a> compiler. However, it is
+      not platform specific and we strive to keep the source code
+      compliant with
+      the <a href="https://en.cppreference.com/w/cpp/links">C++ 2014
+      Standard</a> (see
+      also <a href="https://github.com/cplusplus/draft/blob/master/papers/n4140.pdf?raw=true">here</a>
+      for PDFs of the various C++ standards).
     </p>
 
     <p>