To Install Latin Modern Math font in OS X I want to have the codes of the project GUST in my OS X. 
Franck indicates here that the definite way is to download those fonts from there and install. 
However, I would like to find some packaged version because this is so standard tool. 
The fonts were removed from MacTeX 2015, while they were in MacTeX 2013. 
I could not find the fonts in homebrew. 

Test code

\documentclass{article}
\usepackage{fontspec}
\usepackage{polyglossia} % also loads package fontspec
\usepackage{unicode-math} % if you also need maths
\setmathfont{Latin Modern Math}
\begin{document}
$\not\to$
\end{document}


giving font-not-found error. 
Disabling the line \setmathfont{Latin Modern Math} gives the bad arrow which I do not want to have:



Installing fonts manually

I downloaded the fonts here from the GUST project. 
I added the fonts to my system by opening fontbook and adding there the fonts directly. 
However, there is no Latin Modern Math in the package:





How can you install Modern Latin Math font in OS X?
I've also noticed The Latin Modern fonts are not installed to OS X with the MacTeX2015 distibution. 

The LM fonts (also the math font) are installed in the tex distribution under: 
/usr/local/texlive/2015/texmf-dist/fonts/opentype/public/lm
and /usr/local/texlive/2015/texmf-dist/fonts/opentype/public/lm-math

To use these font's throughout OS X there is no need to reinstall them, you can link these fonts to your Fonts in OS X as follows:

ln -s /usr/local/texlive/2015/texmf-dist/fonts/opentype/public/lm/ '/Library/Fonts/Latin Modern'
ln -s /usr/local/texlive/2015/texmf-dist/fonts/opentype/public/lm-math/ '/Library/Fonts/Latin Modern Math'


Note: This was inspired by the comments on this question.