added flash error messages to pages new and edit pages
add flash error messages for posts new and edit views
add flash error messages for users new and edit views
update to posts/show.html.erb page to include author name on posts
Merge pull request #18 from SalamanderMike/master

Minor changes. Added a lovely gradient to the page background for temporary use
Merge pull request #19 from ncaskey04/master

Added flash messages to pages, posts, and users
updated posts#index page - now rendering