update readme with latest size metrics

Author: bartveneman

readme.md

@@ -112,6 +112,11 @@ analyze('foo{}')
 //   'selectors.browserhacks.unique': [],
 //   'selectors.browserhacks.totalUnique': 0,
 //   'stylesheets.cohesion.average': 0,
+//   'stylesheets.filesize.compressed.brotli.compressionRatio': -0.8,
+//   'stylesheets.filesize.compressed.brotli.totalBytes': 9,
+//   'stylesheets.filesize.compressed.gzip.compressionRatio': -4,
+//   'stylesheets.filesize.compressed.gzip.totalBytes': 25,
+//   'stylesheets.filesize.uncompressed.totalBytes': 5,
 //   'stylesheets.simplicity': 1,
 //   'stylesheets.size': 5,
 //   'stylesheets.browserhacks.total': 0,