reactivate ag on ctrlp
remove duplicate vim entries from sensible

also set the default fold to 99 (always open)
remove ctrp/ack for unite.vim
add a global agignore
update pathogen to 2.3
fix file_rec to not use --nonumber
add an update script to update plugins
update plugins(syntastic, unite, snipmate)
case insensitive unite and tabular maps
clean up README