README.md in pronto-swiftlint-0.1.0 vs README.md in pronto-swiftlint-0.1.1

@@ -7,5 +7,21 @@
 # Configuring runner
 
 You can explicitly specify location of SwiftLint runner by passing `PRONTO_SWIFTLINT_PATH` env variable e.g:
 
 `PRONTO_SWIFTLINT_PATH=/usr/very/hidden/bin/swiftlint pronto run --index`
+
+This runner requires `json` formatter to be set. You can do it by modifying `.swiftlint.yml` in directly pronto is run:
+
+```yaml
+disabled_rules: # rule identifiers to exclude from running
+  - trailing_whitespace
+included: # paths to include during linting. `--path` is ignored if present.
+  - Source
+excluded: # paths to ignore during linting. Takes precedence over `included`.
+  - Source/Pods
+line_length: 120
+type_body_length:
+  - 300 # warning
+  - 400 # error
+reporter: "json"
+```