include link posts in post index, with external url, timestamp

include sample link url, post

Add .JPG and .jpeg extensions to Magnific Popup lightbox call. Fixes #33

Add whitespace below figure element. Fixes #32

Merge pull request #31 from maxheld83/hotlinked-images

Hotlinked images

Adjust size of author bio photo in footer

Correct author bio image alignment.
Fixes #24

Merge pull request #30 from maxheld83/gplus-handle

Accept Google+ handle instead of full URL for bio link and authorship stuff

cleanup

make feature images accept hotlinks

make twitter cards accept hotlinked images

Make google+ expect handle, not full url for head and author-bio

revert some change

Make twitter cards accept hotlinked images

fix google plus integration in bio, now accepts username

Revert google change

Site.owner.avatar now accepts local images and hotlinked images (conditional on http://, https:// in string)

Accepts G+ username instead of full URL, adds Google authorship as per https://support.google.com/webmasters/answer/1408986?expand=option2

Bring back Gemfile

Revert "Update"

This reverts commit 81b4e1881e00a183e9a7e6a2b091ed31485a5170.