Do not assume 'global' exists in non-node environments when using build tools. Fixes #251
Do not assume 'global' exists in non-node environments when using build tools. Fixes #251

marciot/webvr-polyfill,jsantell/webvr-polyfill,jsantell/webvr-polyfill,immersive-web/webvr-polyfill,immersive-web/webvr-polyfill,borismus/webvr-polyfill,marciot/webvr-polyfill,borismus/webvr-polyfill