Merge pull request #1 from monking/master

Hide container border on print
rename css filename
update markdownviewer.css accordingly, and update version to 1.0.3
use marked.js to render MD
Merge pull request #2 from keripix/master

Used marked.js instead of showdown.js to render MD
remove non-use code, add scroller for outline
update readme and manifest.json to use markdownviewer.js
update version to 1.0.4
reset the width percentage; use media query to adapt layout based on screen size;buttons on hover; move buttons to the left
add change log in README
update change log format
move buttons to right to keep outline and buttons in one place; update outline css to have better fit size
update version to 1.0.6
update changelog and add contributors
update readme
add more items in TODO
update README, LICENSE, TODO
update version to 1.0.7
add support for github like table styles
collapsible outline