Add script to continuously send sync

Good for testing that PC to Blaster communication works

send_sync.py

@@ -0,0 +1,20 @@
+# Sends sync forever
+
+import sys
+import pytimex
+
+print("Looking for blaster...")
+
+try:
+	port = sys.argv[1]
+except:
+	port = "/dev/ttyACM0"
+
+# Initialize blaster
+blaster = pytimex.Blaster(port)
+
+print("Sending sync, press ctrl+c to stop")
+
+# Send synchronization byte forever
+while True:
+	blaster.blast(0x55)