Adding a one to many relationships between user and posts

Added Migrations — add user id to posts table
—Add a user_id key to posts table, link to id on user table
—Remove connection to id on user table, drop user_id column in posts
table

UserModel
— Added method (posts) defining the one to many relationship between
user and posts

PostsModel
— Added method (user) that Defines relationship that post belongs to
user (author)

index.blade.php
— Pagination — Allow for continuation of search filtering if next page
is selected