enhance CoreOS guide
Merge pull request #1 from yadutaf/enhance-guide-coreos

Enhance CoreOS guide
Add more documentation, and fix css design
Merge pull request #2 from VincentCasse/master

Add more documentation, and fix css design
Fix some css. Title and subtitle padding are changed
Add tutorials of arnaud-runabove
Update links in README
Merge pull request #3 from VincentCasse/master

Add two tutorials (of arnaud-runabove) and fix some css
Create a new guide and fix some typo
Add images to a guide
Fix some bugs on designs and links
Merge pull request #4 from VincentCasse/master

Fix some bugs on design and links in footer
Fix lists in a guide
Remove a guide
Create How To Install OpenVPN Access Server on Ubuntu 14.04
Update How To Install OpenVPN Access Server on Ubuntu 14.04
Update How To Install OpenVPN Access Server on Ubuntu 14.04
Update How To Install OpenVPN Access Server on Ubuntu 14.04
Rename How To Install OpenVPN Access Server on Ubuntu 14.04 to How To Install OpenVPN Access Server on Ubuntu 14.04.markdown
Update How To Install OpenVPN Access Server on Ubuntu 14.04.markdown