add search bar for post titles
paginate and sort search results
change searches model passed argument name
render error message for no search results
delete negation in search show view
search box uses search controller & model
deleted searches index route & blank line
name changes
update posts naming
Merge pull request #21 from cgruppioni/cg-search-bar

Search bar for post titles
Add bourbon, neat, and bitters
Add background image
Make body transparent, and container white bg
Add sidebar to all pages
Fix links in breadcrumbs
Move sign up to sign in page, and clean application layout