Changing Who Are These People regex

now it matches "whois X" as well as "who is X"
Merge pull request #24 from songe/master

Add PDF support for TitleGrabber
Merge pull request #25 from neunenak/master

slight change to who is
use a friendlier format for !person and !persons_feelings
use && instead of `and` for booleanness #cosmetic
insert dots in the front of the name

The current implementation, which inserts the dot at the end, will ping
people they log in with underscored or numbered names like "czhang1",
which gets changed to "czhang.1".
Merge pull request #27 from jayferd/plusplus-format

Use a friendlier format for !person and !persons_feelings
Countdown timer for when steggy's out of exile
Merge pull request #29 from cjzhang/countdown

Countdown timer for when steggy's out of exile
Adding #csuapad per czhangs request