insatll_prerequisite.sh: reorganize into functions
vimrc: use filetype indent
vimrc: enable folding by indent
offlineimaprc: add cert_fingerprint
checkpatch.pl: add file
insatll_prerequisite.sh: add some packages
vimrc: execute pathogen
vim/autoload/pathogen.vim: install pathogen
vim/bundle/syntastic: install syntastic(git repo)
vimrc: support sytastic checks
notes: update notes