Merge pull request #102 from watson-developer-cloud/add-iam-section-to-readme

docs: add readme section about iam

Author: germanattanasio

README.md

@@ -35,6 +35,11 @@ This method enables a smaller bundle by only including the desired components, f
 var recognizeMic = require('watson-speech/speech-to-text/recognize-microphone');
 ```
 
+## Using with IAM
+
+This SDK _CAN_ be used in the browser with services that use IAM for authentication. This does require a server-side component - an endpoint used to retrieve the token. An example can be found [here](https://github.com/watson-developer-cloud/speech-javascript-sdk/blob/master/examples/server.js#L92).
+
+Once that is set up, the token can be used in your SDK request with the parameter `access_token`. See [this example](https://github.com/watson-developer-cloud/speech-javascript-sdk/blob/master/examples/static/microphone-streaming.html#L36).
 
 ## Changes