Merge pull request #3 from vannkorn/feature

- fix portfolio layout
- Add sitemap.xml
- Add images to portfolio.html page
- Add google analytics codes
Merge pull request #4 from vannkorn/feature

- Add link to write article
- Add stack overflow icon and implement color to icons
Merge branch 'master' of https://github.com/vannkorn/vannkorn
- Add github account
- Use new images for portfolio
- Change profile image
- Edit words
- Fix portfolio image cut off on mobile version
- Add meta description to all pages
- Fix wrong links and title in some pages
- Add linkedin profile