Weather segment grep fix for BSD.
Merge pull request #164 from hadret/master

Fix grep in weather segment for FreeBSD
Added deprecation warning. Fixes #128
Some Macs don't  reach the max battery capacity

Checking ioreg for "FullyCharged" to be set to "Yes" and that's it's
connected to power; if so don't display segment. Also dropped the max
percentage to 99% (some older machines don't reach 100% charge
capacity).
Merge pull request #165 from ericboehs/master

Some Macs don't reach their max battery capacity
Merge branch 'master' of git://github.com/erikw/tmux-powerline