Add package_data for correct instalation of .patch file

cal_tools/setup.py

@@ -4,6 +4,7 @@ setup(
     name='calTools',
     version='0.1',
     packages=['cal_tools',],
+    package_data={'': ['conf_latex.patch']},
     url='',
     license='(c) European XFEL GmbH',
     author='Steffen Hauf',