Added 3cx sms-mms upgrader.

app.py

@@ -1,5 +1,5 @@
 from flask import Flask
-from routes import yeastar, voipms
+from routes import yeastar, voipms, threecx
 import logging
 import sys
 
@@ -12,6 +12,7 @@ app = Flask(__name__)
 # Register blueprints
 app.register_blueprint(yeastar.bp)
 app.register_blueprint(voipms.bp)
+app.register_blueprint(threecx.bp)
 
 if __name__ == '__main__':
     app.run(host='0.0.0.0', port=5000)