Create README.md
revise readme.md
move image assets from S3 to public directory
use before block instead of define method
remove unused code
sanitize page_id to prevent mysql injection
add 'aws-sdk' gem for S3 integration
add example S3 credentials
move parameters (page_id, goal_type & goal) to path instead of query string
correct boolean logic used to decide whether or not to refresh image
replace S3 image proxy with redirect; perform image updating as background process
update README and add example S3 credentials to .env.example
merge master and add_s3_for_caching
refactor background processes
reduce whitespace by cropping rendered image to appropriate dimensions
add md5 hash to image path
move templates into views directory; add form for generating secure URLs
rename template; update README.md
update example environment variable configuration in .env.example
clarify & update environment variable names in app.rb