Co-authored-by: Joe Haddad <joe.haddad@zeit.co>
```.next``` folder wasn't in the gitignore file causing .next folder to be tracked by git
* Update blog-starter example * Updated content * Updated readme * Updated readme * static → assets * Add bottom margin * Add to docs * Add excerpt * Update docs/advanced-features/preview-mode.md Co-authored-by: Luis Alvarez <luis@zeit.co> Co-authored-by: Shu Uesugi <shu@chibicode.com>