Fix version.

Author: Ned Zimmerman

style.css

@@ -5,7 +5,7 @@ Description: This theme is named after American-Canadian activist, journalist, a
 Author: Pressbooks (Book Oven Inc.)
 Author URI: https://pressbooks.com
 Copyright: 2017 Pressbooks (Book Oven Inc. <[email protected]>
-Version: 1.0.0-rc.1
+Version: 1.0.0
 Template: pressbooks-book
 GitHub Theme URI: pressbooks/pressbooks-jacobs
 */