Add compatibility check badges to READMEs. (#8288)

packages/google-cloud-phishing-protection/README.rst

@@ -1,11 +1,17 @@
 Python Client for Phishing Protection API (`Alpha`_)
 ====================================================
 
+|compat_check_pypi| |compat_check_github|
+
 `Phishing Protection API`_:
 
 - `Client Library Documentation`_
 - `Product Documentation`_
 
+.. |compat_check_pypi| image:: https://python-compatibility-tools.appspot.com/one_badge_image?package=google-cloud-phishing-protection
+   :target: https://python-compatibility-tools.appspot.com/one_badge_target?package=google-cloud-phishing-protection
+.. |compat_check_github| image:: https://python-compatibility-tools.appspot.com/one_badge_image?package=git%2Bgit%3A//github.com/googleapis/google-cloud-python.git%23subdirectory%3Dphishingprotection
+   :target: https://python-compatibility-tools.appspot.com/one_badge_target?package=git%2Bgit%3A//github.com/googleapis/google-cloud-python.git%23subdirectory%3Dphishingprotection
 .. _Alpha: https://github.com/googleapis/google-cloud-python/blob/master/README.rst
 .. _Phishing Protection API: https://cloud.google.com/phishing-protection
 .. _Client Library Documentation: https://googleapis.github.io/google-cloud-python/latest/phishingprotection/usage.html
@@ -72,4 +78,4 @@ Next Steps
    APIs that we cover.
 
 .. _Phishing Protection API Product documentation:  https://cloud.google.com/phishing-protection
-.. _repository’s main README: https://github.com/googleapis/google-cloud-python/blob/master/README.rst
+.. _repository’s main README: https://github.com/googleapis/google-cloud-python/blob/master/README.rst