Add icon description via popup

Signed-off-by: Lee <jessy1092@gmail.com>
Merge branch 'master' into gh-pages
deploy
Merge pull request #31 from jessy1092/master

Add icon description via popup
try to fix #32 but failed... QQ
Merge branch 'gh-pages' of github.com:hackfoldr/hackfoldr-2.0 into gh-pages
Merge branch 'master' of github.com:hackfoldr/hackfoldr-2.0

Conflicts:
	index.jade
add popup to expand / collapse icons... don't know if it's necessary for mobile layout, though
Merge branch 'master' into gh-pages
'deploy'
merge
'deploy'
Add Travis-ci to deploy and Add gulp.js to develop the project.
regen for 33fc084
update the development README

Signed-off-by: Lee <jessy1092@gmail.com>
regen for df4f407
make CI build faster
Merge pull request #34 from PeterDaveHello/patch-1

make CI build faster
regen for 780e696
Auto transform youtube url to youtube embed url. close issue #8

Signed-off-by: Lee <jessy1092@gmail.com>