1. add intro/feedback menu;
2. add intro flow when by selecting intro menu.
1. anno in anno from community is 2-level now.
1. change anno home menu label from 'Quick Start' to 'Intro';
2. change anno home menu to 'Intro', 'Feedback' and 'Settings'.
detect 4 spiral gesture and increase accuracy.
Merge pull request #16 from allmywant/master

fix about "update app name"
Merge branch 'community_level'
Merge branch 'gesture'
Update AndroidManifest.xml
merge CommunityActivity.java
Delete gestures

This was an old gestures file, just for the spiral gesture. Created a new one today.
revised gesture file clockwise spiral one loop inward
Merge pull request #17 from david-kennan/master

revised gesture file clockwise spiral one loop inward
Delete gestures
revised gesture file clockwise spiral one loop inward
Merge pull request #18 from david-kennan/master

revised gesture file clockwise spiral one loop inward
merge gesture.