Fixes controller generator closes redneckbeard/gadget#16
Merge pull request #17 from ChuckHa/fix-controller-gen

Fixes controller generator closes redneckbeard/gadget#16
Start generated projects out with a 404 template.

Provide a -stubs flag for generating stock controller methods.
Add docs link to README.
Customizable request logging.
Slightly nicer output from project generator.
Render all 20x responses to the controller/action template; resolves #19.
Make template path configurable.
Add built-in template helper 'render', invoked as `{{render foo .}}`. The helper will first look for foo.html in the subdirectory of the templates directory corresponding to the controller responding to the current request, and if absent, will then look for foo.html in the root templates directory.

As a result of instrumenting the broker for testing, the path where the broker looks for templates is now configurable by setting the value of `templates.TemplatePath`.

This resolves #18.
Recover from panics in controllers. Return trace as body if debug=true, and log the trace if debug=false.
Correctly pass context argument to subtemplate; fixes #20.
Allow base template to invoke templates that child templates might not define without erroring.
gofmt.
Appease Travis.