Use "vim-endwise"

ref.
  https://github.com/tpope/vim-endwise
  http://qiita.com/alpaca_taichou/items/ab2ad83ddbaf2f6ce7fb
  https://gist.github.com/4521460
Revert "Use "vim-endwise""

This reverts commit 82f92b90c4cab0cd025f8ed2eb34ca40354e2d84.

It's not yet useful for me now.

Left configurations and references for the future myself.
Merge branch 'vim-endwise'