Added missing author reference in azimuthal integrator class

src/toolbox_scs/detectors/azimuthal_integrator.py

@@ -11,6 +11,10 @@ class AzimuthalIntegrator(object):
         similar images. Calculates array indices for a given parameter set that 
         allows fast recalculation.
 
+        Copyright (c) 2019, Michael Schneider
+        Copyright (c) 2020, SCS-team
+        license: BSD 3-Clause License (see LICENSE_BSD for more info)
+
         Parameters
         ==========
         imageshape : tuple of ints