remove align as a neobundle, because it's not sync'ed with the upstream.
add mac osx specific mapping for zoomwintab.
add autocmd to set bg=dark after colorscheme changes.
remove build config for ctrlp_cmatcher.
add mac osx specific mappings for multi_cursor.
use env 'DROPBOX_ROOT' instead of 'MDX_DROPBOX' for vimwiki.
add x_git to mode/ccpp.
remove airline complete from mode/vim.
plugin align is not neobundle managed any more, remove it from modes/x_common.
add mapping ]s cogh to gitgutter.
add mac osx specific mapping to switch tabs in vim.
let vim consider .md file as markdown file instead of Modula-2.
set mac osx specific guifont.
add new mode -- modes/markdown.