Merge changes I4ebb17e5,I434e2171

* changes:
  google-assistant-sdk/README: add missing deps for audiotest
  google-assistant-sdk/README: add missing link

Author: proppy

google-assistant-sdk/README.rst

@@ -32,6 +32,11 @@ googlesamples-assistant-audiotest
 
 This tool verifies device setup for audio recording and playback.
 
+- Install the sample's dependencies::
+
+    sudo apt-get install portaudio19-dev libffi-dev libssl-dev
+    pip install --upgrade google-assistant-sdk[samples]
+
 - Record 10 seconds of audio samples and play them back::
 
     googlesamples-assistant-audiotest --duration 10
@@ -110,3 +115,5 @@ the License.
 .. _Google Assistant SDK: https://developers.google.com/assistant/sdk
 .. _Google Assistant gRPC API: https://developers.google.com/assistant/sdk/reference/rpc
 .. _Google Assistant library: https://developers.google.com/assistant/sdk/reference/library
+.. _GitHub releases page: https://github.com/googlesamples/assistant-sdk-python/releases
+