Added headers to context

spec/context_spec.cr

@@ -20,4 +20,17 @@ describe "Context" do
     response = kemal.call(request)
     response.headers["Content-Type"].should eq("application/json")
   end
+
+  it "parses headers" do
+    kemal = Kemal::Handler.new
+    kemal.add_route "GET", "/" do |env|
+      name = env.headers["name"]
+      "Hello #{name}"
+    end
+    headers = HTTP::Headers.new
+    headers["Name"] = "kemal"
+    request = HTTP::Request.new("GET", "/", headers)
+    response = kemal.call(request)
+    response.body.should eq "Hello kemal"
+  end
 end

src/kemal/context.cr

@@ -9,6 +9,10 @@ class Kemal::Context
     @content_type = "text/html"
   end
 
+  def headers
+    request.headers
+  end
+
   def set_content_type(content_type)
     @content_type = content_type
   end