Simplifying setup.py.

setup.py

@@ -25,7 +25,9 @@ def main():
         license='GPL3',
         package_dir={'': './'},
         packages=find_packages(),
-        include_package_data=True,
+        package_data={
+            'cpmdparser.versions.cpmd41': ['input_data/cpmd_input_tree.pickle'],
+        },
         install_requires=[
             'nomadcore',
         ],