Added .jumbotron a to font-size rules to keep the download button with
an acceptable size.
Added slimbox to show QR codes.
Added cryptocurrencies icons in black.
Added cryptocurrency icons to Donations.
Tring to convert Apk QR-Code to dataUrl to display on slimbox.

Merge branch 'gh-pages' of git@github.com:andrefbsantos/boilr-site.git
into gh-pages

Conflicts:
	css/boilr.css