add the about.md
- added the polymer project
added responsive vertical timeline
Merge pull request #20 from christian-fei/master

Added responsive vertical timeline
Some minor refactorings and several new resources.
Merge branch 'master' of github.com:dypsilon/frontend-dev-bookmarks
Adde backlift.
Removed the wrong foundation version.
add iscroll
Merge pull request #21 from notice501/master

Add iscroll.