Fix Meteor absolute path references to modules
Fix Meteor absolute path references to modules

As reported in #288, Meteor wants a '/' in front of absolute paths and interprets them relative to the project root directory.

This commit utilizes the new moduleNameFormatter configuration hook to add the slash in front of module names that are using absolute paths.

trotzig/import-js,trotzig/import-js,Galooshi/import-js,trotzig/import-js