ENH Brain.add_label():  when plotting Label instance, use label.hemi attribute
ENH Brain.add_label():  also use label.color attribute
DOC
Merge pull request #92 from christianmbrodbeck/label.hemi

ENH Brain.add_label(): use the label.hemi and label.color attributes
ENH: Add Travis
STY: PEP8
Merge pull request #94 from Eric89GXL/travis

ENH: Add Travis