neocomplcacheのインストール

#インストール
.vimrcにbundleの記述

```vimscrip:.vimrc
NeoBundle 'Shougo/neobundle.vim'

".vim/bundle/neocomplcache/doc/neocomplcache.txt
"から、必須設定と書かれている部分をコピペ
" Disable AutoComplPop.
let g:acp_enableAtStartup = 0
" Use neocomplcache.
let g:neocomplcache_enable_at_startup = 1
" Use smartcase.
let g:neocomplcache_enable_smart_case = 1
" Use camel case completion.
let g:neocomplcache_enable_camel_case_completion = 1
" Use underbar completion.
let g:neocomplcache_enable_underbar_completion = 1
" Set minimum syntax keyword length.
let g:neocomplcache_min_syntax_length = 3
let g:neocomplcache_lock_buffer_name_pattern = '\*ku\*'
	
" Define dictionary.
let g:neocomplcache_dictionary_filetype_lists = {
      \  'default' : '',
      \  'vimshell' : $HOME.'/.vimshell_hist',
      \  'scheme' : $HOME.'/.gosh_completions'
      \}
	
" Define keyword.
if !exists('g:neocomplcache_keyword_patterns')
  let g:neocomplcache_keyword_patterns = {}
endif
	let g:neocomplcache_keyword_patterns['default'] = '\h\w*'
	
" Plugin key-mappings.
inoremap <expr><C-g>     neocomplcache#undo_completion()
inoremap <expr><C-l>     neocomplcache#complete_common_string()
	
" Recommended key-mappings.
" <CR>: close popup and save indent.
inoremap <silent> <CR> <C-r>=<SID>my_cr_function()<CR>
function! s:my_cr_function()
  return neocomplcache#smart_close_popup() . "\<CR>"
  " For no inserting <CR> key.
  "return pumvisible() ? neocomplcache#close_popup() : "\<CR>"
endfunction
" <TAB>: completion.
inoremap <expr><TAB>  pumvisible() ? "\<C-n>" : "\<TAB>"
" <C-h>, <BS>: close popup and delete backword char.
inoremap <expr><C-h> neocomplcache#smart_close_popup()."\<C-h>"
inoremap <expr><BS> neocomplcache#smart_close_popup()."\<C-h>"
inoremap <expr><C-y>  neocomplcache#close_popup()
inoremap <expr><C-e>  neocomplcache#cancel_popup()
" For cursor moving in insert mode(Not recommended)
"inoremap <expr><Left>  neocomplcache#close_popup() . "\<Left>"
"inoremap <expr><Right> neocomplcache#close_popup() . "\<Right>"
"inoremap <expr><Up>    neocomplcache#close_popup() . "\<Up>"
"inoremap <expr><Down>  neocomplcache#close_popup() . "\<Down>"
" Or set this.
"let g:neocomplcache_enable_cursor_hold_i = 1
" Or set this.
"let g:neocomplcache_enable_insert_char_pre = 1
	
" AutoComplPop like behavior.
"let g:neocomplcache_enable_auto_select = 1
	
" Shell like behavior(not recommended).
"set completeopt+=longest
"let g:neocomplcache_enable_auto_select = 1
"let g:neocomplcache_disable_auto_complete = 1
"inoremap <expr><TAB>  pumvisible() ? "\<Down>" : "\<C-x>\<C-u>"
	
" Enable omni completion.
autocmd FileType css setlocal omnifunc=csscomplete#CompleteCSS
autocmd FileType html,markdown setlocal omnifunc=htmlcomplete#CompleteTags
autocmd FileType javascript setlocal omnifunc=javascriptcomplete#CompleteJS
autocmd FileType python setlocal omnifunc=pythoncomplete#Complete
autocmd FileType xml setlocal omnifunc=xmlcomplete#CompleteTags
	
" Enable heavy omni completion.
if !exists('g:neocomplcache_omni_patterns')
  let g:neocomplcache_omni_patterns = {}
endif
let g:neocomplcache_omni_patterns.ruby = '[^. *\t]\.\h\w*\|\h\w*::'
"autocmd FileType ruby setlocal omnifunc=rubycomplete#Complete
let g:neocomplcache_omni_patterns.php = '[^. \t]->\h\w*\|\h\w*::'
let g:neocomplcache_omni_patterns.c = '[^.[:digit:] *\t]\%(\.\|->\)'
let g:neocomplcache_omni_patterns.cpp = '[^.[:digit:] *\t]\%(\.\|->\)\|\h\w*::'
	
" For perlomni.vim setting.
" https://github.com/c9s/perlomni.vim
let g:neocomplcache_omni_patterns.perl = '\h\w*->\h\w*\|\h\w*::'

```

:NeoBundleInstall を実行

これでrubyでも補完がとりあえずできました！