Install test data

Author: yarikoptic

setup.py

@@ -54,7 +54,10 @@ def findsome(subdir, extensions):
         ]},
         install_requires=ldict['REQUIRES'],
         extras_require=ldict['EXTRA_REQUIRES'],
-        )
+        package_data={
+            'heudiconv.tests': [op.join('data', '*'), op.join('data', '*', '*')],
+        }
+    )
 
 
 if __name__ == '__main__':