update v0.4.2 release note & old down load link
update v0.4.2 release note
Merge branch 'gh-pages' of github.com:rhiokim/haroopad into github/gh-pages

* 'gh-pages' of github.com:rhiokim/haroopad:
  update social buttons
  fixed facebook button
  test google+ button
  test facebook like button
  update description meta
  update description meta
  add open meta information
  fixed special thanks size error
  add soomtong
  update shortcut
  update shortcut