Fixed Ping Time Axis, Print test start time

plotting.py

@@ -37,5 +37,6 @@ plt.figure(figsize=[6,6])
 plt.plot(time_data, ping_data)
 plt.plot(time_data, jitter_data)
 plt.legend(['ping', 'jitter'])
+plt.gcf().autofmt_xdate()
 plt.savefig("ping_jitter.svg")
 

speedtesting.py

@@ -29,6 +29,7 @@ def write_data(filename, data):
         writer.writerow(data) 
 
 now = datetime.datetime.now()
+print("Starting speedtest " + now.strftime("%H:%M:%S"))
 date = now.strftime("%d-%m-%Y")
 filename_lan = 'results_' + date + '_lan.csv'
 filename_wlan = 'results_' + date + '_wlan.csv'