Add speech beta samples (GoogleCloudPlatform#1151)

* Speech beta samples: Diarization,Multi-channel, Multi-language and Word level confidence

* Update client library

* Updates after review

* Updates after review : Please let this be the last one :)

* Update to released client library

* Update to Inc.

* Update to Inc.

* Update to reference bucket for files

Author: nirupa-kumar

speech/cloud-client/README.md

@@ -103,3 +103,49 @@ Transcribe an audio file with recognition metadata
 ```
 mvn exec:java -DRecognize -Dexec.args="metadata ./resources/commercial_mono.wav"
 ```
+
+
+## Diarization
+Transcribe an audio file using diarization on an audio file
+```
+mvn exec:java -DRecognize -Dexec.args="diarization ./resources/commercial_mono.wav"
+```
+
+Transcribe an audio file using diarization on an audio file hosted on GCS
+```
+mvn exec:java -DRecognize -Dexec.args="diarization gs://cloud-samples-tests/speech/commercial_mono.wav"
+```
+
+## Multi-channel
+Transcribe an audio file with multiple channels
+```
+mvn exec:java -DRecognize -Dexec.args="multi-channel ./resources/commercial_stereo.wav"
+```
+
+Transcribe an audio file hosted on GCS with multiple channels
+```
+mvn exec:java -DRecognize -Dexec.args="multi-channel gs://cloud-samples-tests/speech/commercial_stereo.wav"
+```
+
+## Multi language
+Transcribe an audio file with multiple languages
+```
+mvn exec:java -DRecognize -Dexec.args="multi-language ./resources/Google_Gnome.wav"
+```
+
+Transcribe an audio file hosted on GCS with multiple languages
+```
+mvn exec:java -DRecognize -Dexec.args="multi-language gs://cloud-samples-tests/speech/Google_Gnome.wav"
+```
+
+## Word level confidence
+Transcribe an audio file with word level confidence
+```
+mvn exec:java -DRecognize -Dexec.args="word-level-conf ./resources/audio.raw"
+```
+
+Transcribe an audio file hosted on GCS with word level confidence
+```
+mvn exec:java -DRecognize -Dexec.args="word-level-conf gs://cloud-samples-tests/speech/brooklyn.flac"
+```
+

speech/cloud-client/pom.xml

@@ -40,7 +40,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-speech</artifactId>
-      <version>0.52.0-alpha</version>
+      <version>0.55.0-beta</version>
     </dependency>
     <!-- [END dependencies] -->