pykrige.test.TestRegressionKrige times out

[rth]

Travis CI occasionally fails because pykrige.test.TestRegressionKrige takes more than 10min to run (maximum allowed time). This seems to happen randomly, on other occasions in completes within seconds: see e.g. #61 where one Travis CI job passed, the other failed.

I think the problem is that sometimes the test fails to download the test dataset with fetch_california_housing in https://github.com/bsmurphy/PyKrige/blob/master/pykrige/test.py#L1726 . In any case it might be a good idea to replace this with a built-in dataset that doesn't require to be downloaded.

cc @basaks

[basaks]

@rth I need a bit more time to check this out.
You are right in saying that may be we can keep a small copy of the data in this repo for these tests.

[MuellerSeb]

Is working fine with #131 . Feel free to re-open if I am wrong.