Fix loader to work with source files using any EOL separators

[iki]

Source EOL separators do not need to match OS default EOL separator. For example, it's common in Git for WIndows to commit LF and checkout as-is, so the source files do use LF (\n), and not CRLF (\r\n).

[apollo-cla]

@iki: Thank you for submitting a pull request! Before we can merge it, you'll need to sign the Meteor Contributor Agreement here: https://contribute.meteor.com/

[jnwng]

thank you @iki - i'm going to close this as a duplicate of #95 (since they both accomplish the same goal). i chose #95 because this issue looks like its affecting a lot of people and we need you to sign the CLA before we can land changes and i want to get this out promptly.

i do want to thank you for contributing though!