Add Parkaby implementation, sadly it has no gem specification

templates/parkaby/big.mab

@@ -0,0 +1,26 @@
+html {
+  head {
+    title 'Customers List'
+  }
+  body {
+    customers.each do |customer|
+      dl {
+        dt 'Name:'
+        dd customer['name']
+        dt 'Age:'
+        dd customer['age']
+        dt 'Address:'
+        dd {
+          [
+            customer['zip'],
+            customer['country'],
+            customer['city'],
+            customer['address']
+          ].join("\n")
+        }
+        dt 'Employer:'
+        dd customer['employer']
+      }
+    }
+  }
+}

templates/parkaby/small.mab

@@ -0,0 +1,19 @@
+html {
+  head {
+    title window_title
+  }
+  body {
+    h1 "Hello, #{username}!"
+    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
+      veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
+      commodo consequat. Duis aute irure dolor in reprehenderit in voluptate
+      velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint
+      occaecat cupidatat non proident, sunt in culpa qui officia deserunt
+      mollit anim id est laborum.
+      END
+    }
+  }
+}