Merge pull request googleapis#2873 from daspecster/add-speech-alpha-readme

Add speech to alpha list. Closes googleapis#2869

Author: daspecster

README.rst

@@ -38,6 +38,7 @@ Cloud Platform services:
 -  `Stackdriver Error Reporting`_ (`Error Reporting README`_)
 -  `Google Cloud Natural Language`_ (`Natural Language README`_)
 -  `Google Cloud Translation`_ (`Translation README`_)
+-  `Google Cloud Speech`_ (`Speech README`_)
 -  `Google Cloud Vision`_ (`Vision README`_)
 -  `Google Cloud Bigtable - HappyBase`_ (`HappyBase README`_)
 -  `Google Cloud Runtime Configuration`_ (`Runtime Config README`_)
@@ -70,6 +71,8 @@ updates. See `versioning`_ for more details.
 .. _Natural Language README: https://github.com/GoogleCloudPlatform/google-cloud-python/tree/master/language
 .. _Google Cloud Translation: https://pypi.python.org/pypi/google-cloud-translate
 .. _Translation README: https://github.com/GoogleCloudPlatform/google-cloud-python/tree/master/translate
+.. _Google Cloud Speech: https://pypi.python.org/pypi/google-cloud-speech
+.. _Speech README: https://github.com/GoogleCloudPlatform/google-cloud-python/tree/master/speech
 .. _Google Cloud Vision: https://pypi.python.org/pypi/google-cloud-vision
 .. _Vision README: https://github.com/GoogleCloudPlatform/google-cloud-python/tree/master/vision
 .. _Google Cloud Bigtable - HappyBase: https://pypi.python.org/pypi/google-cloud-happybase/