~/.vimrc: Enable project search using ag

.vimrc

nnoremap <leader>q :b#<cr>
nnoremap <leader>b :Buffers<cr>
nnoremap <leader>e :Files<cr>
nnoremap <leader>s :Ag<cr>
"nnoremap <leader>b :b <c-d>
"nnoremap <leader>e :e **/