Update the mac executable information for 3.1.1 on the web site.
Visual Studio 2017</td>
<td><a href="https://github.com/visit-dav/visit/releases/download/v3.1.1/visit3.1.1_x64.exe">Download</a></td>
</tr>
+ <tr>
+ <td>macOS Mojave 10.14.6 - Intel 64 bit<br />
+ Darwin 10.14, Darwin Kernel Version 18.7.0, clang-1000.11.45.5, MPICH<br />
+ <i>(Works on Mac OS X 10.14 and later.)</i></td>
+ <td><a href="https://github.com/visit-dav/visit/releases/download/v3.1.1/visit3.1.1.darwin-x86_64-10_14.dmg">Download</a></td>
+ </tr>
<tr>
<td>Mac OS X 10.13 - Intel 64 bit<br />
Darwin 10.13, Darwin Kernel Version 17.7.0, clang-900.39.2, MPICH<br />
<i>(Works on Mac OS X 10.13 and later.)</i></td>
- <td><a href="https://github.com/visit-dav/visit/releases/download/v3.1.1/visit3.1.1.darwin-x86_64-10_13.dmg">Download</a></td>
+ <td><a href="https://github.com/visit-dav/visit/releases/download/v3.1.1/visit3.1.1.darwin-x86_64-10.13.dmg">Download</a></td>
</tr>
<tr>
<td>Linux - x86_64 64 bit<br />
