Extends WordPress WP REST API with new routes pointing to WordPress options.
It covers:
'blogname',
'blogdescription',
'gmt_offset',
'date_format',
'time_format',
'start_of_week',
'timezone_string',
'default_pingback_flag',
'default_ping_status',
'default_comment_status',
'comments_notify',
'moderation_notify',
'comment_moderation',
'require_name_email',
'comment_whitelist',
'comment_max_links',
'moderation_keys',
'blacklist_keys',
'show_avatars',
'avatar_rating',
'avatar_default',
'close_comments_for_old_posts',
'close_comments_days_old',
'thread_comments',
'thread_comments_depth',
'page_comments',
'comments_per_page',
'default_comments_page',
'comment_order',
'comment_registration',
'thumbnail_size_w',
'thumbnail_size_h',
'thumbnail_crop',
'medium_size_w',
'medium_size_h',
'medium_large_size_w',
'medium_large_size_h',
'large_size_w',
'large_size_h',
'image_default_size',
'image_default_align',
'image_default_link_type',
'posts_per_page',
'posts_per_rss',
'rss_use_excerpt',
'show_on_front',
'page_on_front',
'page_for_posts',
'blog_public',
'default_category',
'default_email_category',
'default_link_category',
'default_post_format'