Minor fixes
Ignore XML nifti extension if it cannot be read
Merge pull request #53 from yarikoptic/master

ENH: initial .travis.yml -- needs clarifications on "installation"
Get rid of useless configuration.cfg that was automatically created in the package
Try to install with --user
WIP on cleaning nosetests
Rename module name to avoid confusion with verbose object when calling pyhrf.verbose()
Refactor: pyhrf.verbose -> pyhrf._verbose
WIP on fixing nosetests
Set matplotlib backend to cairo for unit tests
Set matplotlib backend to cairo for pyhrf_plot_slice (non-interactive)
Fix import of matplotlib
Add detail on config of ssh keys for parallel cluster scenario
Wip on nosetest fixing
Improve doc on config of parallel cluster
Try to fix issue with $DISPLAY and matplotlib import with travis
Fix quote
Fix sed command
Merge pull request #54 from thomas-vincent/master

Fix nosetests (works with travis)
BF: use $PY not $PYTHON for package prefixes