Add vim syntax highlighting, polyglot plugin

.gitmodules

@@ -7,3 +7,6 @@
 [submodule ".vim/pack/grrowl/start/editorconfig-vim"]
 	path = .vim/pack/grrowl/start/editorconfig-vim
 	url = https://github.com/editorconfig/editorconfig-vim.git
+[submodule ".vim/pack/grrowl/start/vim-polyglot"]
+	path = .vim/pack/grrowl/start/vim-polyglot
+	url = git@github.com:sheerun/vim-polyglot.git

.vim/pack/grrowl/start/vim-polyglot

@@ -0,0 +1 @@
+Subproject commit 0a7c62b3b22a75f91245a718c1409e4216ae61c8

.vimrc

@@ -25,3 +25,7 @@ set backspace=indent,eol,start	" Backspace behaviour
 set autoread
 
 colorscheme desert
+
+syntax on
+filetype plugin on
+filetype plugin indent on