title: How to copy some files to the build target directory with SBT?
body: <p>How can I copy some source files (e.g. <code>/src/main/html/*.html</code>) to the build output directory (e.g. <code>/target/scala-2.11/</code>) with SBT so that the files end up in the <strong>target root</strong> and not in the <code>classes</code> subdirectory (which is what happens if I add the source directory to <code>unmanagedResourceDirectories</code>)?</p>