First section of testing docs done
Merge branch 'master' of github.com:nitrogen/nitrogen_core
Template internally use binaries

This also fixes this issue:
https://github.com/nitrogen/nitrogen/issues/82

Nitrogen was converting the template to a list and storing it that way,
then postprocessing it with unicode:to_binary.
Clean up element_template

remove ?IS_STRING (no longer necessary) from template parsing, and
remove debug io:format