Vim syntax file for Mason (Perl embedded in HTML) based on the version of Andrew Smith from http://www.masonhq.com/editors/mason.vim
If you don't have a preferred installation method, you can use vundle to install this script. If you have vundle installed, just paste following to your .vimrc file:
Bundle 'aming/vim-mason'
You can also just put all the files and directory to your vim directory.