Synced with 'linux-neobundle' for mdx_ultisnips
Added two mappings <C-S> <C-F> to switch among tabs.
Cleaned up snippet.snippets, removed bizarre symbols.
Added a global variable g:vim_config_root to hold current full path of
vim configuration directory.
New plugin 'origami'
New colorscheme 'lucius'
Updated preliminary comment section of vimrc.