try include package data

Author: ferrine

setup.py

@@ -53,7 +53,8 @@
           url=URL,
           long_description=LONG_DESCRIPTION,
           packages=find_packages(),
-          package_data={'docs': ['*'], 'pymc3.examples': ['data/*']},
+          package_data={'docs': ['*']},
+          include_package_data=True,
           classifiers=classifiers,
           install_requires=install_reqs,
           tests_require=test_reqs,