Update README.md

Author: GGChe

README.md

@@ -45,11 +45,11 @@ Filtering Flow
 In the realtime script, a combination of sine waves can be created from the function provided. In the case of the example provided, a combination of a 1 and 50 Hz sine waves are provided.
 
 For filtering sample by sample:
-
+````
   y = np.zeros(SAMPLES)
     for i in range(SAMPLES):
        y[i] = myFilter.filter(mysignal[i])
-
+````
 
 And you obtain something like this: