Test against environment :production for middleman V4, set html characterset

Author: easydatawarehousing

source/articles/index.html.haml

@@ -5,5 +5,5 @@ title: "TryRuby Articles"
 .row
   .col-sm-12
     - blog.articles.each do |article|
-      %h2= link_to article.title, "#{environment == :build ? '/TryRuby' : ''}#{article.url}"
+      %h2= link_to article.title, "#{environment == :production ? '/TryRuby' : ''}#{article.url}"
       %p= article.data.the_summary

source/index.html.markdown

@@ -1,6 +1,6 @@
 ---
 title: "TryRuby: Learn programming with Ruby"
-description: Learn to program in Ruby in 15 minutes
+description: Learn to program in Ruby in 30 minutes
 ---
 
 <div class="row">

source/layouts/_header.html.haml

@@ -1,7 +1,7 @@
 %nav.navbar.navbar-default.opal-nav(role="navigation")
   .container
     .navbar-header
-      %a.navbar-brand(href="#{environment == :build ? '/TryRuby' : '/'}")
+      %a.navbar-brand(href="#{environment == :production ? '/TryRuby' : '/'}")
         TryRuby
         %sup= 'R4'
       %button.navbar-toggle(type="button" data-toggle="collapse" data-target="#opal-navbar")
@@ -12,14 +12,14 @@
     #opal-navbar.navbar-collapse.collapse
       %ul.nav.navbar-nav
         %li
-          %a(href="#{environment == :build ? '/TryRuby/articles' : '/articles'}")
+          %a(href="#{environment == :production ? '/TryRuby/articles' : '/articles'}")
             %span(class="glyphicon glyphicon-book" aria-hidden="true")
             Articles
         %li
-          %a(href="#{environment == :build ? '/TryRuby/playground' : '/playground'}")
+          %a(href="#{environment == :production ? '/TryRuby/playground' : '/playground'}")
             %span(class="glyphicon glyphicon-tower" aria-hidden="true")
             Playground
         %li
-          %a(href="#{environment == :build ? '/TryRuby/about' : '/about'}")
+          %a(href="#{environment == :production ? '/TryRuby/about' : '/about'}")
             %span(class="glyphicon glyphicon-info-sign" aria-hidden="true")
             About

source/layouts/layout.haml

@@ -2,7 +2,8 @@
 %html
   %head
     %meta{:name => "viewport", :content => "width=device-width, initial-scale=1.0, maximum-scale=1.0 user-scalable=no"}
-    %meta{:name => "charset", :content => "utf-8"}
+    %meta{:content => "text/html; charset=UTF-8", "http-equiv" => "Content-Type"}
+
     %title= current_page.data.title || 'TryRuby'
     %meta{:name => "description", :content => "#{current_page.data.description || 'Learn programming with Ruby'}"}