Update requirements.txt

Create make target 'requirements' to deal with pkg-resources bug caused
by ubuntu passing incorrect metadata to pip (see link).

pypa/pip#4022

Makefile

@@ -7,3 +7,6 @@ mongo:
 test:
 	pytest --cov=exchanges
 
+requirements:
+	pip freeze | grep -v "pkg-resources" > requirements.txt
+

exchanges/cryptocompare/client.py

@@ -0,0 +1,30 @@
+import requests
+import json
+import pprint
+import asyncio
+import websocket
+
+
+class CCWebSocket:
+    ws_protocol = 'wss'
+    ws_host = 'streamer.cryptocompare.com'
+
+    def __init__(self):
+        self.url = f'{self.ws_protocol}://{self.ws_host}'
+        self.ws = websockets
+    def add_sub(self):
+        sub_string = {'subs':['0~Poloniex~BTC~USD']}
+        self.ws.send(json.dumps(sub_string))
+        self.ws.run_forever()
+
+    def stream(self):
+        self.ws = websocket.WebSocketApp(self.url,
+                                         on_message=self._handle_message,
+                                         on_error=self._handle_message)
+
+
+    def _handle_message(self, ws, msg):
+        print(msg)
+
+sock = CCWebSocket()
+sock.add_sub()

requirements.txt

@@ -1,3 +1,4 @@
+arctic==1.55.0
 certifi==2017.7.27.1
 chardet==3.0.4
 coverage==4.4.1
@@ -11,14 +12,14 @@ idna==2.6
 mockextras==1.0.2
 multidict==3.3.0
 numpy==1.13.3
-pandas==0.20.3
+pandas==0.21.0
 py==1.4.34
 pyaml==17.10.0
 pymongo==3.5.1
 pytest==3.2.3
 pytest-cov==2.5.1
 python-dateutil==2.6.1
-pytz==2017.2
+pytz==2017.3
 PyYAML==3.12
 requests==2.18.4
 six==1.11.0