Author parsing
Merge pull request #37 from austinrfnd/master

New Feature: Author Parsing
version bump
Change image_magick to fastimage in gemspec.
Allow net_connect for FastImage.
Update spec to reflect that three images meet criteria.
Use FastImage to get image size instead of mini_magick.

- Change require call and error message.
- Always detect format using File#extname.
- Rename #load_image to #get_image_size.
- Detect format using FastImage in #get_image_size.
Change mini_magick to fastimage in README.
Add changes for 0.5.6.
Bump version to 0.5.6.
Disallow true web connections.
Add in all images matching criteria.
Add in fake fixtures for images in update spec.
Merge pull request #38 from louismullie/master

JRuby compatibility: use FastImage instead of MiniMagick for image retrieval.