message: doc(browser_io): Add writeArrayBuffer docs
diff: @@ -24,6 +24,15 @@ Read an image or mesh from a [Blob](https://developer.mozilla.org/en-US/docs/Web
  Read an image or mesh from an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). `fileName` is a string with the file name. `mimeType` is an optional mime-type string.
  +## writeArrayBuffer(webWorker, useCompression, imageOrMesh, fileName, mimeType) -> { webWorker, [arrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) }
  +
  +Write an image or mesh to a an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer).
  +
  +*useCompression*: compress the pixel data when possible
  +*imageOrMesh*: [itk/Image](./Image.html) or [itk/Mesh](./Mesh.html) instance to write
  +*fileName*: name that would be used for the resulting file
  +*mimeType*: optional mime-type for the resulting file
  +
  ---
  ## readImageFile(webWorker, file) -> { webWorker, [image](./Image.html) }
  