Features:
- This is twitter streaming app using less energy
- Tweets flow downward with smooth animation
- Other twitter clients can work together
- TTS engine speak tweets on the timeline

permissions:
- INTERNET and ACCESS_NETWORK_STATE is used to get tweets by twitter API.
- READ_PHONE_STATE is used to detect the incoming calls and pause the speech automatically.
- WAKE_LOCK is needed to keep on speaking with light turned off