Add some arbitrary vim bindings for common devel commands

dotfiles/vim/vimrc

 nnoremap ,. :next<CR>
 nnoremap ,l :ls<CR>
 nnoremap ,w :set wrap!<CR>
+nnoremap ,s :w <bar> !git slurp<CR>
+nnoremap ,v :w <bar> !make vdk_test<CR>
+nnoremap ,t :w <bar> !make test<CR>
 
 if has("autocmd")
   filetype plugin indent on