Implemented parallel async API calls and implemented support for bittrex and poloniex

bot/helpers.py

@@ -1,3 +0,0 @@
-def get_answer():
-    """Get an answer."""
-    return True

bot/market_data_crawler.py

@@ -0,0 +1,37 @@
+import tornado.escape, tornado.httpclient
+
+def update_market_data_for_basecoin(basecoin):
+    global market_data
+    market_data = {}
+    market_requests = []
+
+    """Bittrex"""
+
+    def handle_response_bittrex(response):
+        if response.error:
+            print("Error: %s" % response.error)
+        else:
+            response_data = tornado.escape.json_decode(response.body)
+
+            for market in response_data["result"]:
+                base, target = market["MarketName"].split("-")
+                if base == basecoin:
+                    market_data.update({
+                        target: {
+                            "Bittrex": market["Last"]
+                        }
+                    })
+
+
+    bittrex = {
+        "url": "https://bittrex.com/api/v1.1/public/getmarketsummaries",
+        "response_handler": handle_response_bittrex
+    }
+
+    market_requests.append(bittrex)
+
+    http_client = tornado.httpclient.AsyncHTTPClient()
+    for request in market_requests:
+        print("Doing request to {0}".format(request["url"]))
+        http_client.fetch(request["url"], request["response_handler"])
+