Explain eslint philosophy

qutebrowser/javascript/.eslintrc.yaml

@@ -1,3 +1,15 @@
+# qutebrowser's way of using eslint is perhaps a bit untypical: We turn on *all*
+# the checks eslint has to offer, and then selectively disable/reconfigure the
+# ones which got in the way below.
+#
+# This makes eslint much stricter (which is good). However, it means you might
+# run into a case where you totally disagree with what it says, because some
+# check is not useful or desired for qutebrowser, but nobody did run into it
+# yet.
+#
+# In those cases, it's absolutely okay to modify this config as part of your PR.
+# See it as a way to fine-tune eslint rather than a rigid style guide.
+
 env:
     browser: true