add node modules to repo

node_modules/fs-extra/docs/outputFile-sync.md

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+# outputFileSync(file, data, [options])
+
+Almost the same as `writeFileSync` (i.e. it [overwrites](http://pages.citebite.com/v2o5n8l2f5reb)), except that if the parent directory does not exist, it's created. `file` must be a file path (a buffer or a file descriptor is not allowed). `options` are what you'd pass to [`fs.writeFileSync()`](https://nodejs.org/api/fs.html#fs_fs_writefilesync_file_data_options).
+
+- `file` `<String>`
+- `data` `<String> | <Buffer> | <Uint8Array>`
+- `options` `<Object> | <String>`
+
+## Example:
+
+```js
+const fs = require('fs-extra')
+
+const file = '/tmp/this/path/does/not/exist/file.txt'
+fs.outputFileSync(file, 'hello!')
+
+const data = fs.readFileSync(file, 'utf8')
+console.log(data) // => hello!
+```