WIP: Better py3k support
ENH: Better write support
Merge pull request #17 from warrd/master

Brainvision and BTI tests now passing in Py3
FIX: Fix some writes
FIX: Fix warnings catch
FIX: Fix fix
FIX: Fix some writes
FIX: Fix Py3 STC operators
FIX: Fix reads
STY: PEP8
FIX: Fix divide
FIX: Fix viz
FIX: Fix raw
FIX: Fix raw copy
FIX: Fix cov and utils
FIX: Fix parc
FIX: Travis
FIX: Travis v2
FIX: Travis v3
FIX: Travis v4