Get rid of redundant space in the output of `revel new -a`

[shinypb]

This is a total nitpick PR, but hopefully such things are welcome from time to time. 😅

Currently, the output of revel new -a myapp includes a double space before the app name:

You can run it with:
   revel run -a  myapp

This removes the space so the output looks like this:

You can run it with:
   revel run -a myapp

[notzippy]

Thanks @shinypb