Merge pull request #476 from nghuuphuoc/gh-pages

Latest doc
Update version to v0.5.0
Update API. Add dynamic option section
Add destroy() method
Update revalidateField() method
Upgrade to the latest v0.5.0-dev
Add ID attr to headings of the Writing form section
Add missing validators that support dynamic option
Use revalidateField() in examples
Fix internal links
Add events
Update latest v0.5.0-dev
Update events document
Add Language packages section
Update events document
Remove unused fonts
Update Getting started page using highlight tag
Update Settings page using highlight tag
Update Examples using highlight tag
Don't highlightjs anymore