Fixing newline character for text files

This addressed an issue where the newlines generated when including snippet files does not contain newline characters, this causes SnippetManager.parseSnippetFile to always return empty.

Instead, of creating actual newlines and a multiline string with \, this adds newline characters.
Slight adjustment to the newline fix

I also had to remove this line to get things to work.
Merge pull request #1350 from rgriffith/snippet_newline_fix

Fix newlines for text files