I agree that the `$rewrite_base` parameter should be removed.

I think removing the `-` on `-%>` should be done, but it would be nice if the `RewriteBase` line remained in the `_rewrite.erb` fragment so that the fragment could be used in the `_directories.erb` fragment (in which `RewriteBase` would be relevant).

If you are interested in adding the rewrite fragment call to `_directories.erb` as part of this pull request that would be awesome! If not then just let me know.