little code cleanup

ex3.py

@@ -1,3 +1,9 @@
+"""
+Author: Lukas Heiligenbrunner
+Matr.Nr.: K12104785
+Exercise 3
+"""
+
 import os.path
 from glob import glob
 
@@ -57,7 +63,6 @@ class ImageStandardizer:
             yield np.array(arr, dtype=np.float32)
 
 
-# Press the green button in the gutter to run the script.
 if __name__ == '__main__':
     std = ImageStandardizer(input_dir='unittest/unittest_input_0')
     print(std.analyze_images())