Update metadata for next release

setup.py

@@ -35,6 +35,11 @@
     io.open('adal/__init__.py', encoding='utf_8_sig').read()
     ).group(1)
 
+try:
+    long_description = open('README.md').read()
+except OSError:
+    long_description = "README.md is not accessible on TRAVIS CI's Python 3.5"
+
 # To build:
 # python setup.py sdist
 # python setup.py bdist_wheel
@@ -52,15 +57,20 @@
 setup(
     name='adal',
     version=__version__,
-    description=('The ADAL for Python library makes it easy for python ' +
+    description=('Note: This library is already replaced by MSAL Python, ' +
+                 'available here: https://pypi.org/project/msal/ .' +
+                 'ADAL Python remains available here as a legacy. ' +
+                 'The ADAL for Python library makes it easy for python ' +
                  'application to authenticate to Azure Active Directory ' +
                  '(AAD) in order to access AAD protected web resources.'),
     license='MIT',
     author='Microsoft Corporation',
     author_email='[email protected]',
     url='https://github.com/AzureAD/azure-activedirectory-library-for-python',
+    long_description=long_description,
+    long_description_content_type="text/markdown",
     classifiers=[
-        'Development Status :: 3 - Alpha',
+        'Development Status :: 5 - Production/Stable',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',