Fix up structure and README

examples/11_emergency_stop.py

@@ -0,0 +1,33 @@
+from tello_sim.tello_sim_client import TelloSimClient
+
+import time
+
+from tello_sim.tello_sim_client import TelloSimClient
+
+# Create a Tello instance
+tello = TelloSimClient()
+
+# Connect to Tello
+tello.connect()
+
+print("Starting flying in ...")
+for i in range(3, 0, -1):
+    print(i)
+    time.sleep(1)
+
+# Takeoff
+print("Take off")
+tello.takeoff()
+
+
+for i in range(10, 0, -1):
+    print("Get Ready to catch drone!")
+    print("Emergency  stop in", i)
+    time.sleep(1)
+
+print("Emergency stop now!")
+# Land
+tello.emergency()
+
+# End the connection
+tello.end()