added navbar entry for public timeline

app/views/layouts/_header.html.haml

@@ -13,6 +13,8 @@
           = nav_entry "Timeline", root_path
         %ul.nav.navbar-nav
           = nav_entry "Inbox", "/inbox", badge: inbox_count
+        %ul.nav.navbar-nav
+          = nav_entry "Public", public_timeline_path
         %ul.nav.navbar-nav.navbar-right
           %button.btn.btn-primary.navbar-btn.btn-sm{"data-target" => "#modal-ask-followers", "data-toggle" => "modal", :type => "button"}
             %i.fa.fa-pencil-square-o
@@ -35,4 +37,4 @@
           = nav_entry "Sign up", new_user_registration_path
 
 - if user_signed_in?
-  = render 'shared/modal_ask_followers'
+  = render 'shared/modal_ask_followers'

app/views/public/index.html.haml

@@ -3,7 +3,7 @@
     .panel.panel-default
       .panel-body
         %p
-          Public timeline
+          You are viewing the public timeline.
     = render 'shared/links'
   .col-md-9.col-xs-12.col-sm-9
     = render 'layouts/messages'