Add Parkaby implementation, sadly it has no gem specification

templates/markaby/big.mab

@@ -1,26 +1,26 @@
-html do
-  head do
+html {
+  head {
     title 'Customers List'
-  end
-  body do
+  }
+  body {
     customers.each do |customer|
-      dl do
+      dl {
         dt 'Name:'
         dd customer['name']
         dt 'Age:'
         dd customer['age']
         dt 'Address:'
-        dd do
+        dd {
           [
             customer['zip'],
             customer['country'],
             customer['city'],
             customer['address']
           ].join("\n")
-        end
+        }
         dt 'Employer:'
         dd customer['employer']
-      end
-    end
-  end
-end
+      }
+    }
+  }
+}

templates/markaby/small.mab

@@ -1,10 +1,10 @@
-html do
-  head do
+html {
+  head {
     title window_title
-  end
-  body do
+  }
+  body {
     h1 "Hello, #{username}!"
-    p do
+    p {
       <<-END
       Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
       tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
@@ -14,6 +14,6 @@ html do
       occaecat cupidatat non proident, sunt in culpa qui officia deserunt
       mollit anim id est laborum.
       END
-    end
-  end
-end
+    }
+  }
+}