Reads file either from template name in system folder,
file path or remote URL, and splits it into lines for
easier handling by rapport internal parser. "find"
in tpl.find is borrowed from Emacs parlance - this
function actually reads the template.
Usage
tpl.find(fp)
Arguments
fp
a character string containing a template path,
a template name (for package-bundled templates only),
template contents separated by newline (\n), or a
character vector with template contents.