avs_study links python https://github.com/ewenchou/alexa-client https://github.com/robladbrook/simple-avs https://github.com/sammachin/AlexaPi-Dev https://github.com/nicholasjconn/python-alexa-voice-service ios https://github.com/grimlockrocks/alexa-swift3-sample-app windows https://github.com/weihao042122/alexa-win32 java https://github.com/armzilla/amazon-echo-ha-bridge links repo https://github.com/miguelmota/awesome-amazon-echo example projects https://ewenchou.github.io/blog/2016/10/16/putting-it-all-together/