RF: These don't seem necessary.
Merge pull request #14 from arokem/rf-xval

RF: These don't seem necessary.
RF: renamed cross_validations and added documentation
TST: changed the name of the tests to reflect the xvalidation name change
RF: renamed the cross validation module
TST: fixed the xval test so that multiple runs are concatenated
RF: fixed the xvalidation so that it can accept multiple runs and Models
TST: split tests for having unique and repeated runs.
TST: minor modifications
RF: changed the gaussian model and fit inputs
RF: removed the execution file.  ill put some API recipes on the GitHub Pages
RF: removed the filehandling from VisualStimulus. it only takes a numpy array
Merge branch 'master' of https://github.com/kdesimone/popeye
RF: some changes to the STRF pRF model
RF: modifications to the auditory stimulus
TST: updated the tests
RF: modification to the gaussian model
TST: updated gaussian test
TST: changed the xval tests to reflect the new GaussianFit call