[ES6] Force JS files to use unix newlines on Windows
[ES6] Force JS files to use unix newlines on Windows

Git checks out files with native newlines, which is making eslint angry.

Issue #1157
Issue #1228

Change-Id: If83adca5c206581c5fe1883a07c4d5c84a326663

TheModMaker/shaka-player,tvoli/shaka-player,vimond/shaka-player,tvoli/shaka-player,vimond/shaka-player,shaka-project/shaka-player,shaka-project/shaka-player,vimond/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,TheModMaker/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player