BUG: install test data

Fix the setup script to install the data for tests.  This is necessary
for test_template.py to pass.

Author: mgorny

setup.py

@@ -185,7 +185,10 @@ def get_long_description():
     platforms="OS Independent",
     version=versioneer.get_version(),
     packages=find_packages(),
-    package_data={"bottleneck": ["LICENSE"]},
+    package_data={
+        "bottleneck": ["LICENSE"],
+        "bottleneck.tests": ["data/*/*"],
+    },
     requires=["numpy"],
     install_requires=["numpy"],
     extras_require={"doc": ["numpydoc", "sphinx", "gitpython"]},