Add etlua templating support.

JordanMajd commented 5 years ago

This PR:

Adds support for rendering templates and generating skeletons with etlua templates.
Adds the --template "etlua" command line option.
Updates the --lhtml command line option to --template "lhtml".
Uses bash over sh for scripts/test.sh in order to run on Ubuntu (Ubuntu uses dash which doens't support parens ().
Ensures tests clean up build artifacts correctly.
Adds etlua as a dependency.
Updates README.md and test/README.md with information about using etlua.

Closes #60

JordanMajd commented 5 years ago

Looks like I skipped over the looping logic in the new templates. Adding now.

JordanMajd commented 5 years ago

13ec752 adds the loops into the etlua archive and RSS.

Fizzadar / Luapress