Update README.md

apibrain · Jan 10, 2016 · 50a8456 · 50a8456
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diff --git a/README.md b/README.md
@@ -116,6 +116,7 @@ options:
     (`!!js/undefined`, `!!js/regexp` and `!!js/function`):
     http://yaml.org/type/
   - `DEFAULT_FULL_SCHEMA` - all supported YAML types.
+- `json` _(default: false)_ - compatibility with JSON.parse behaviour. If true, then duplicate keys in a mapping will override values rather than throwing an error.
 
 NOTE: This function **does not** understand multi-document sources, it throws
 exception on those.