update FAQ doc
Merge branch 'gh-pages' of github.com:rhiokim/haroopad into github/gh-pages

* 'gh-pages' of github.com:rhiokim/haroopad:
  revised some contents and updated member profile
  add math sample markdown
  fixed download link for v0.9.1
  v0.9.1 hotfix
  update release note for v0.9
  add font-size manual
  update for v0.9
  update shortcut ko
  add font-size option manual
  update for lib and manual for 0.9
  update mathematics manual
  update release note for 0.9
revised some contents and updated member profile - fixed mis'