add signin popup
Merge branch 'master' of https://github.com/khoa-nd/TechLooper
implement a quick Intro prototype
Merge branch 'master' of https://github.com/khoa-nd/TechLooper
Merge commit '0d5300af7b44b80b2d54d0a4287c1d108b8bef02'
Merge commit '959a8de54a674013b1d3d53c98eba5029d81684b'
Add suggested-features to keep track all suggestions from the Community