Readme: call out single-quoted object keys too. [skip ci]

/ht https://twitter.com/waltertross/status/771460373111267328
json5 · Sep 3, 2016 · e4e44fd · e4e44fd
1 parent 326daf5
commit e4e44fd
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diff --git a/README.md b/README.md
@@ -53,6 +53,8 @@ JSON5. **All of these are optional**, and **all of these come from ES5**.
 
   *(TODO: Unicode characters and escape sequences aren’t yet supported in this
   implementation.)*
+
+- Object keys can also be single-quoted.
 
 - Objects can have trailing commas.