Update .gitignore2
Add wicked pdf gem.
Edit show method on messages_controller to respond to pdf format. Added a new view for rendering the pdf, there's a issue for now: the generated pdf doesn't have the CSS styles from bootstrap.
Edit to show method on messages_controller to show the message's number when calling the pdf, it stills ignores most of the css.
Add show.pdf.erb template to generate messages PDFs, slight edit to show template. To use it, go to a message and at the end of the URL put .pdf (this is temporary) this will download a pdf, working on a way to choose whether download it or just display it in the browser.
Add link below title on views/show to view the pdf file of that message.
Removed download method, it's better to leave it to the pdf viewer.
Merge pull request #5 from Zauvohi/pdf-feature

PDF feature