Primary Link
<%= primary_link_to('Google', 'http://google.com') %>
generates:
<a href="http://google.com" class="primary-link"><span>Google</span></a>
Primary Button
<%= primary_button('Google') %>
generates:
<button class="primary-button" type="submit"><span><span>Google</span></span></button>
Secondary Link
<%= secondary_link_to('Google', 'http://google.com') %>
generates:
<a href="http://google.com" class="secondary-link"><span>Google</span></a>
Secondary Button
<%= secondary_button('Google') %>
generates:
<button class="secondary-button" type="submit"><span><span>Google</span></span></button>
Buy Button
<%= buy_button('Google', '$10.00') %>
generates:
<button class="btn-buy" type="submit"><span><span>Google</span><em>$10.00</em></span></button>