Merge pull request #1 from suppayami/master

Cơ bản về A* Algorithm
Add og:title of current page.
Merge remote-tracking branch 'origin/master'
Fix too large margin-top.
Change title of first page.
Do not show posts from news and events.
Fix mixing CSS of inline code and code blocks.
Change style of links in article.
Add post.
Fix typo.
Update permalink structure.
Add post.
Merge pull request #4 from suppayami/master

Co ban ve code chuyen dong
Change styles of A in article column
Merge remote-tracking branch 'origin/master'
Add post
Change title.
Change category.
Add a filter to translate category names to Vietnamese
Filter Cats