deleted example_user.rb and created new branch for creatinga layout
added bootstrap gem and markup/css
added css styling to app/assets/stylesheets/customer.css.scss
added typography css styling
added header css styling
replaced html shim stylesheets lines with a single call to railes helper 'render:'
forgot to delete the html shim lines, recommitting.
replaced header with rails helper render: layouts/header
created _shim.html.erb to hold html shim code.
created partial for the site header, _header.html.erb
 created partial for the site footer, layouts/_footer.html.erb
added a render for the footer partial
added footer css styling
added Sass to the .center rules
added Sass to the #logo element, for #logo:hover
transformed the footer elements to Sass elements.
added sass variables for white and lightgray to customer.css.scss
updated customer.css.scss to use bootstrap variables, sass variables, and sass nesting, formatted the indentations etc.
added sprok to gemfile to correct rspec error, commented out contact link on _footer partial,  changed paragraph text on static contact page.
uncommented the contact link on footer partial