- Download your package from https://ctan.org/
- Unzip package under /usr/local/texlive/2012<or your version>/texmf-dist/tex/latex
- Run sudo ./texhash !
texhash is located here:/usr/local/texlive/2012/bin/x86_64-darwin
/usr/local/texlive/2012/bin/x86_64-darwin