Excluded root-level files and .github from istanbul

Josh Goldberg · web-flow · commit 6bb58f75d4bb · 2018-02-14T09:58:56.000-08:00
diff --git a/.istanbul.yml b/.istanbul.yml
@@ -1,3 +1,5 @@
 instrumentation:
   excludes:
+    - "*"
     - "**/*.runtime.js"
+    - ".github/*"
