closes #17 - changed pagination and date in handlebars templates
- Removed triple taches from content as they are no longer required
This update to casper matches that change
- replaces created_at with publish_at in full-post.hbs and list-post.hbs
- changed post.hbs to list-post.hbs and refactored code - changed featured.hbs to full-post.hbs and refactored code - index.hbs now selects first post and extends full-post then list-post on remaining posts - single.hbs now extends full-post
