Add dummy app
Update gemspec
Update gitignore
Setup Rspec
Use only necessary rails frameworks
Add engine tasks to rakefile
Add the ONE spec
Implement solution suggested in issue #1

Lacking the failing test, though.
Code layout
Release version 1.0.1
Support 1.8.7 syntax

Specs on 1.8.7 fails as described in issue #1, 
confirming that has been fixed.
Update master
Add spec task as the default rake task
Error fixed when image is missing
width and height not set if Image is missing
Merge pull request #3 from jeroeningen/resolve_error_missing_image

Error fixed when image is missing
Don't call "asset_paths.asset_for" twice

Fixes #3
Check if width or height have been set too
Bump version
works also without asset pipeline