Github flavored markdown support

.gitmodules

@@ -352,3 +352,6 @@
 [submodule "vim/bundle/bbommarito-vim-slim"]
 	path = vim/bundle/bbommarito-vim-slim
 	url = https://github.com/bbommarito/vim-slim.git
+[submodule "vim/bundle/jtratner-vim-flavored-markdown"]
+	path = vim/bundle/jtratner-vim-flavored-markdown
+	url = https://github.com/jtratner/vim-flavored-markdown.git

vim/plugin/settings/gh-markdown.vim

@@ -0,0 +1,6 @@
+" Support for github flavored markdown
+" via https://github.com/jtratner/vim-flavored-markdown
+augroup markdown
+    au!
+    au BufNewFile,BufRead *.md,*.markdown setlocal filetype=ghmarkdown
+augroup END