include node_modules so release .zip is deployable

node_modules/ext/docs/string_/camel-to-hyphen.md

@@ -0,0 +1,9 @@
+# `string.camelToHyphen()` _(ext/string\_/camel-to-hyphen)_
+
+Convert camelCase string to hyphen separated, e.g. `oneTwoThree` into `one-to-three`. Useful when converting names from js property convention into filename convention.
+
+```javascript
+const camelToHyphen = require("ext/string_/camelToHyphen");
+
+camelToHyphen.call("razDwaTrzy"); // raz-dwa-trzy
+```