Refs #10 - Introduced support for dynamic trees, using special .diecutter-tree template.
Refs #10 - Filename engine is not used if .diecutter-tree file is present.
Refs #10 - Improved security: prevent rendering of templates outside directory.
Refs #10 - Added note about dynamic directory rendering use cases.
Merge pull request #33 from novagile/10-diecutter-tree

Refs #10: dynamic trees via special .diecutter-tree template