Demo and Annotations Upgrade

[stonier]

ToDo

• [x] chatter concert and rocon remocon compile/test
• [x] headless launcher compile (#52)
• [x] headless launcher protocol upgrade #53
• [x] nfc_rocon_writer protocol upgrade #54
• [x] headless launcher testing
• [x] nfc_rocon_writer README.md (#50)
• [x] headless launcher README.md (#52)

[dwlee]

I update headless launcher and nfc wirter. And test the launching the listener with chatter concert. 19a3440..ea26fd8

[dwlee]

Update web app launcher and you can download here. hedless launcher apk rocon nfc writer apk