Changed the default database name to 'pulse'.
Added 'create_posts_table' migration in order to have a table to store blog posts.
Added 'create_pages_table' migration in order to have a table to store cms pages.
Added 'dflydev/markdown' package in order to be able to render Markdown.
Created the  file that explains how the model layer is organized.
Preparing the model test suite
Added the  domain object.
Added the  domain object in order to represent a blog post.
Initial implementation of the  service. This service has the responsability of rendering pages and blog posts.