Adding Security page to the new Splash pages
fixed a mistake on the meta description
Committing files that got left behind first time - in images and css folders
Fixing indentation of the html file
Adding font smoothing to the subheading with .u-text-heading-light. Then changed the width of the container to conserve position of the newline.
Fixed the size of the .security-icon to match the asset itself, so it's not broken on retina
Merge pull request #123 from gocardless/new-security-page

New security page ... for our new splash pages