Include updating view in scenic:view USAGE
Include updating view in scenic:view USAGE

Now that the scenic:view generator can also update an existing view, its
USAGE (displayed in the console help) should mention its dual purpose.

Also update the view definition file name to show that it is
zero-padded.

thoughtbot/scenic,thoughtbot/scenic,cfscode/scenic,cfscode/scenic,thoughtbot/scenic,cfscode/scenic