ENH Brain.add_label():  find labels in subfolder
Check if colorbar is none before seting visibility
Merge pull request #86 from nipy/fix_montage

Check if colorbar is none before seting visibility
ENH: Cleaner normal calculation
Merge pull request #87 from Eric89GXL/cleaner-normals

ENH: Cleaner normal calculation
ENH:  specify relative label location using `subdir` argument
FIX add_label & DOC
Merge pull request #85 from christianmbrodbeck/label-path

ENH Brain.add_label():  find labels in SUBJECTS_DIR subfolder
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
ENH Brain.save_image_sequence():  add option for montage specification
WIP Brain.save_movie()
EXA:  add Brain.save_movie() example
TEST Brain.save_movie()
DOC make_montage():  More descriptive error if make_montage() is called with blank image