add codemirror
Merge pull request #1 from wakamori/add_editor

add codemirror
add viewer.fit
refactor
add toolbar
add toolbar css, png
implement previous/next version control
modify sidemenu
add jquery.svg
add info menu
update edit
add print icon (not work
fix comment
Merge pull request #2 from wakamori/fix_contents

fix comment
support double tap