Add basic travis build
Add Travis badge and testing instructions to README
Add nibabel install separately

This fixes a bug in the nipype install script that I believe is already
fixed in master.
Add more deps to conda requirements
Fix tools/tests __init__ file
Add mayavi to conda install
Create dummy FSL files for travis tests
Don't run doctests on travis to avoid mayavi
Add nitime to conda build
Use real FSL files for testing data
Update scikit-learn cross validation approach
Merge pull request #45 from mwaskom/enable_travis

Add basic travis build