docs: update to sample in READMEs (#662)

Author: yoshi-automation

packages/google-cloud-node/README.md

@@ -57,19 +57,19 @@ npm install @google-cloud/speech
 ### Using the client library
 
 ```javascript
-async function main() {
-  // Imports the Google Cloud client library
-  const speech = require('@google-cloud/speech');
-  const fs = require('fs');
+// Imports the Google Cloud client library
+const speech = require('@google-cloud/speech');
+const fs = require('fs').promises;
 
-  // Creates a client
-  const client = new speech.SpeechClient();
+// Creates a client
+const client = new speech.SpeechClient();
 
+async function quickstart() {
   // The name of the audio file to transcribe
   const fileName = './resources/audio.raw';
 
   // Reads a local audio file and converts it to base64
-  const file = fs.readFileSync(fileName);
+  const file = await fs.readFile(fileName);
   const audioBytes = file.toString('base64');
 
   // The audio file's encoding, sample rate in hertz, and BCP-47 language code
@@ -93,7 +93,7 @@ async function main() {
     .join('\n');
   console.log(`Transcription: ${transcription}`);
 }
-main().catch(console.error);
+quickstart();
 
 ```
 
@@ -106,12 +106,12 @@ has instructions for running the samples.
 
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |
-| Microphone Stream | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/MicrophoneStream.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/MicrophoneStream.js,samples/README.md) |
+| Microphone stream | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/MicrophoneStream.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/MicrophoneStream.js,samples/README.md) |
 | Beta Features | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/betaFeatures.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/betaFeatures.js,samples/README.md) |
 | Infinite Streaming | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/infiniteStreaming.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/infiniteStreaming.js,samples/README.md) |
 | Quickstart | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/quickstart.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/quickstart.js,samples/README.md) |
 | Recognize | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/recognize.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/recognize.js,samples/README.md) |
-| Recognize.v1p1beta1 | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/recognize.v1p1beta1.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/recognize.v1p1beta1.js,samples/README.md) |
+| Recognize speech with metadata | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/recognize.v1p1beta1.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/recognize.v1p1beta1.js,samples/README.md) |
 | Transcribe Context Classes | [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/transcribeContextClasses.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/transcribeContextClasses.js,samples/README.md) |
 
 

packages/google-cloud-node/samples/README.md

@@ -12,12 +12,12 @@
 
 * [Before you begin](#before-you-begin)
 * [Samples](#samples)
-  * [Microphone Stream](#microphone-stream)
+  * [Microphone stream](#microphone-stream)
   * [Beta Features](#beta-features)
   * [Infinite Streaming](#infinite-streaming)
   * [Quickstart](#quickstart)
   * [Recognize](#recognize)
-  * [Recognize.v1p1beta1](#recognize.v1p1beta1)
+  * [Recognize speech with metadata](#recognize-speech-with-metadata)
   * [Transcribe Context Classes](#transcribe-context-classes)
 
 ## Before you begin
@@ -35,7 +35,9 @@ Before running the samples, make sure you've followed the steps outlined in
 
 
 
-### Microphone Stream
+### Microphone stream
+
+Streams audio input from microphone, translates to text.
 
 View the [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/MicrophoneStream.js).
 
@@ -44,7 +46,7 @@ View the [source code](https://github.com/googleapis/nodejs-speech/blob/master/s
 __Usage:__
 
 
-`node samples/MicrophoneStream.js`
+`node MicrophoneStream.js <encoding> <sampleRateHertz> <languageCode>`
 
 
 -----
@@ -71,14 +73,16 @@ __Usage:__
 
 ### Infinite Streaming
 
+Performs infinite streaming using the streamingRecognize operation with the Cloud Speech API.
+
 View the [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/infiniteStreaming.js).
 
 [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-speech&page=editor&open_in_editor=samples/infiniteStreaming.js,samples/README.md)
 
 __Usage:__
 
 
-`node samples/infiniteStreaming.js`
+`node infiniteStreaming.js <encoding> <sampleRateHertz> <languageCode> <streamingLimit>`
 
 
 -----
@@ -120,7 +124,9 @@ __Usage:__
 
 
 
-### Recognize.v1p1beta1
+### Recognize speech with metadata
+
+Analyzes an audio stream, and detects speech along with metadata.
 
 View the [source code](https://github.com/googleapis/nodejs-speech/blob/master/samples/recognize.v1p1beta1.js).
 
@@ -129,7 +135,7 @@ View the [source code](https://github.com/googleapis/nodejs-speech/blob/master/s
 __Usage:__
 
 
-`node samples/recognize.v1p1beta1.js`
+`node recognize.v1p1beta1.js ./resources/commercial_mono.wav <encoding> <sampleRateHertz> <languageCode>`
 
 
 -----

packages/google-cloud-node/synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-speech.git",
-        "sha": "9262e68c0dabf0fffd4771c3b210db0b08d4aa49"
+        "sha": "19650162128148f62ffe82e88175e82808fc9ac2"
       }
     },
     {