MISC: add travis
API: change utils to _utils
Add missing file
Add missing files
MISC: travis.yml
Fix travis.yml
API: imports in _utils/__init__
BUG: make nilearn work on sklearn 0.12
BUG: wrong import
TST: Fix tests under numpy 1.8.0
Address @bthirion's remarks
Merge branch 'master' into canica

Conflicts:
	nisl/decomposition/canica.py
	nisl/io/base_masker.py
	nisl/masking.py