Render arrays smartly; remove one more :message...

  - arrays need to have newlines, otherwise things like backtraces end up completely unusable in emails
  - remove unnecessary :message in ExceptionPresenter

examples/lib/chatterbox/exception_notification/presenter_example.rb

@@ -69,6 +69,23 @@
 EOL
       presenter.render_body.should include(expected)
     end
+
+    it "renders backtrace cleanly" do
+      backtrace = ["/codes/file.rb:52:in `some_method'", 
+        "/codes/file.rb:10:in `different_method'",
+        "/gems/some_gem/gem_name.rb:104:in `main'"]
+      options = { :backtrace => backtrace }
+      presenter = Chatterbox::ExceptionNotification::Presenter.new(options)
+      expected =<<EOL
+Backtrace
+----------
+/codes/file.rb:52:in `some_method'
+/codes/file.rb:10:in `different_method'
+/gems/some_gem/gem_name.rb:104:in `main'
+
+EOL
+      presenter.render_body.should == expected
+    end
   end
 
   describe "render_section" do

lib/chatterbox/exception_notification/presenter.rb

@@ -19,7 +19,8 @@ def summary
     end
 
     def to_message
-      { :message => { :summary => summary, :body => render_body },
+      { :summary => summary, 
+        :body => render_body,
         :config => @config }
     end
 
@@ -54,14 +55,18 @@ def render_section(key, processed_keys = [])
     end
 
     def render_obj(object)
-      if object.is_a?(Hash)
-        render_hash(object)
-      else
-        render_non_hash(object)
+      case object
+      when Hash then render_hash(object)
+      when Array then render_array(object)
+      else render_object(object)
       end
     end
-
-    def render_non_hash(object)
+
+    def render_array(object)
+      render_object(object.join("\n"))
+    end
+
+    def render_object(object)
       "#{object}\n"
     end