Added create_users_table artisan migration
Added create_posts_table, create_categories_table, create_types_table, create_tags_table, create_comments_table and create_uploads_table artisan migrations
Updated create_posts_table, create_categories_table, create_types_table, create_tags_table and create_comments_table artisan migrations
Updated User model and Added Category, Comment, Post, Tag and Type models