Feature/expose revel http handler

Progress toward completing revel/revel#553

- [ ] fix single line imports
I got an error here because `ImportPath` isn't passed to the template render engine
result was: `"<no value>/app/boot"`, which is weird because I thought it should return the empty string or something that results in zero runes. This `<no value>` could be due to a change in golang's or our template functions

Did you make a change to your `revel/cmd` repo? in `new.go`?
It probably makes sense to pass this `ImportPath` value into the rendering context

The current context includes:
``` Go
"AppName":  appName,
"BasePath": basePath,
"Secret":   generateSecret(),
```

We just need to add the following line (to the above code):
`	"ImportPath": basePath + appName,`