add test client and mock cast library

libsmscast.py

@@ -7,7 +7,7 @@ class LibSMSCast:
 	def __init__(self):
 		self.client = TwilioRestClient(config.ACCOUNT_SID, config.AUTH_TOKEN)
 
-	def send(to, msg):
+	def send(self, to, msg):
 		for recipient in to:
 			self.client.messages.create(
 					to=recipient,

mocksmscast.py

@@ -0,0 +1,7 @@
+class LibSMSCast:
+	def __init__(self):
+		pass
+	def send(self, to, msg):
+		for recipient in to:
+			print("\"{}\" -> {}".format(msg, recipient))
+			

testclient.py

@@ -0,0 +1,5 @@
+from mocksmscast import LibSMSCast
+
+client = LibSMSCast()
+
+client.send(['test number'], "hello world")