compileFile function loads a template from text file, compiles it using the
moe.compile function and
stores the result in an internal cache.
compileFile first tries to load from a file exactly as specified by
filename. If the file doesn't exist
and the filename doesn't end with ".moe" then ".moe" is appended to the filename and tried again.
function moe.compileFile(filename, options, callback)
filename- the file to compile
options- compile options (see below)
callback- function that will be called when the template has been compiled
The callback function is a typical Node style callback:
function callback(err, template)