Change latex provider to luatex, closes #476

ftplugin/tex.vim

@@ -0,0 +1,29 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'latex') == -1
+
+" vimtex - LaTeX plugin for Vim
+"
+" Maintainer: Karl Yngve Lervåg
+" Email:      karl.yngve@gmail.com
+"
+
+if !get(g:, 'vimtex_enabled', 1)
+  finish
+endif
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+if !(!get(g:, 'vimtex_version_check', 1)
+      \ || has('nvim-0.1.7')
+      \ || v:version >= 704)
+  echoerr 'Error: vimtex does not support your version of Vim'
+  echom 'Please update to Vim 7.4 or neovim 0.1.7 or later!'
+  echom 'For more info, please see :h vimtex_version_check'
+  finish
+endif
+
+call vimtex#init()
+
+endif