Add jbuilder (#20)

shard.yml

@@ -15,3 +15,5 @@ development_dependencies:
     github: f/temel
   liquid:
     github: TechMagister/liquid.cr
+  jbuilder:
+    github: shootingfly/jbuilder

spec/fixtures/test.jbuilder

@@ -0,0 +1 @@
+json.span Process.pid

spec/kilt/jbuilder_spec.cr

@@ -0,0 +1,18 @@
+require "../spec_helper"
+require "../../src/jbuilder"
+
+class JbuilderView
+  Kilt.file "spec/fixtures/test.jbuilder"
+end
+
+describe "kilt/jbuilder" do
+
+  it "renders jbuilder" do
+    Kilt.render("spec/fixtures/test.jbuilder").should eq("{\"span\":#{Process.pid}}")
+  end
+
+  it "works with class" do
+    JbuilderView.new.to_s.should eq("{\"span\":#{Process.pid}}")
+  end
+
+end

src/jbuilder.cr

@@ -0,0 +1,4 @@
+require "./kilt"
+require "jbuilder"
+
+Kilt.register_engine "jbuilder", Jbuilder.embed