examples: add rest create order example

bfxapi/examples/rest/create_order.py

@@ -0,0 +1,43 @@
+import os
+import sys
+import asyncio
+import time
+sys.path.append('../')
+
+from bfxapi import Client
+
+API_KEY=os.getenv("BFX_KEY")
+API_SECRET=os.getenv("BFX_SECRET")
+
+bfx = Client(
+  API_KEY=API_KEY,
+  API_SECRET=API_SECRET,
+  logLevel='DEBUG'
+)
+
+async def create_order():
+  response = await bfx.rest.submit_order("tBTCUSD", 10, 0.1)
+  # response is in the form of a Notification object
+  for o in response.notify_info:
+    # each item is in the form of an Order object
+    print ("Order: ", o)
+
+async def cancel_order():
+  response = await bfx.rest.submit_cancel_order(1185510865)
+  # response is in the form of a Notification object
+  # notify_info is in the form of an order object
+  print ("Order: ", response.notify_info)
+
+async def update_order():
+  response = await bfx.rest.submit_update_order(1185510771, price=15, amount=0.055)
+  # response is in the form of a Notification object
+  # notify_info is in the form of an order object
+  print ("Order: ", response.notify_info)
+
+async def run():
+  await create_order()
+  await cancel_order()
+  await update_order()
+
+t = asyncio.ensure_future(run())
+asyncio.get_event_loop().run_until_complete(t)