UltiSnips Integration

Example config

Plug 'roxma/nvim-completion-manager'
imap <expr> <CR> (pumvisible() ? "\<C-Y>\<Plug>(expand_or_cr)" : "\<CR>")
imap <expr> <Plug>(expand_or_cr) (cm#completed_is_snippet() ? "\<C-U>" : "\<CR>")
Plug 'SirVer/ultisnips'
let g:UltiSnipsExpandTrigger = "<Plug>(ultisnips_expand)"
inoremap <silent> <C-U> <C-R>=cm#sources#ultisnips#trigger_or_popup("\<Plug>(ultisnips_expand)")<CR>
let g:UltiSnipsJumpForwardTrigger = "<C-J>"
let g:UltiSnipsJumpBackwardTrigger = "<C-K>"