add disqus comments as per hpstr theme
add info about notices in sample post
include sample link url, post
include link posts in post index, with external url, timestamp
Merge pull request #38 from maxheld83/disqus

add disqus comments as per hpstr theme
Include Disqus script only if shortname is present in _config.yml
Merge pull request #43 from maxheld83/link-post

Link posts / Linklog (john gruber style, similar to hpstr)
Add icon to link post heading in indexes
Link icon to source page
Merge pull request #39 from maxheld83/notices

add info about notices in sample post
Add correct padding below link post heading in index
- Fixes #45
Add alternate button colors from HPSTR theme
- Fixes #40
merged upstream