Merge pull request #14 from thechunsik/gh-pages

update bubbletree-map
Merge pull request #15 from thechunsik/gh-pages

delete dropdon on bubbletree-map
Merge pull request #16 from thechunsik/gh-pages

update faq answer about dataset
Merge pull request #17 from thechunsik/gh-pages

fixed seunghun twt
Merge pull request #18 from thechunsik/gh-pages

update description of this site
updating index.html(ver1)
Merge pull request #19 from Yeyeon/gh-pages

updating index.html(ver1)
Revert "update description of this site"
Merge pull request #20 from codeforseoul/revert-18-gh-pages

Revert "update description of this site"
update index.html(final)
Merge pull request #21 from Yeyeon/gh-pages

update index.html(final)
ver 1.0