Update default.blade.php

add some section
Update view_post.blade.php

update view_post section
Update Post.php

update post model for description and keywords
Update view_post.blade.php
remove presenters
Merge pull request #366 from AnewG/patch-2

Update view_post.blade.php
Merge pull request #365 from AnewG/patch-1

Patch 1
Merge pull request #1 from andrewelkins/master

sept 26