revised setup.py and removed m2r dependency

setup.py

-from distutils.core import setup
-import os
+import pathlib
+from setuptools import setup
 
-readme_file = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'README.md')
-try:
-    from m2r import parse_from_file
-    readme = parse_from_file(readme_file)
-except ImportError:
-    # m2r may not be installed in user environment
-    print('m2r not installed')
-    readme = 'documentation see: https://git.geomar.de/digital-earth/dasf/dasf-progress-api/-/blob/master/README.md'
+# The directory containing this file
+HERE = pathlib.Path(__file__).parent
 
-
-print(readme)
-
-version='0.1.4'
+# The text of the README file
+README = (HERE / "README.md").read_text()
+version = '0.1.4'
 
 setup(
     name='deprogressapi',
     packages=['deprogressapi'],
     version=version,
     description='basic back-end progress api for the data analytics software framework dasf',
-    long_description=readme,
+    long_description=README,
+    long_description_content_type='text/markdown',
     license='Apache-2.0',
     author='Daniel Eggert <daniel.eggert@gfz-potsdam.de>, Adam Sasin <sasin@hu-potsdam.de>',
-    author_email = 'daniel.eggert@gfz-potsdam.de',
+    author_email='daniel.eggert@gfz-potsdam.de',
     keywords=['dasf', 'digital-earth', 'pulsar', 'gfz', 'progress reporting', 'api'],
     url='https://git.geomar.de/digital-earth/dasf/dasf-progress-api',
     download_url='https://git.geomar.de/digital-earth/dasf/dasf-progress-api/-/archive/v' + version + '/dasf-progress-api-v' + version + '.tar.gz',
@@ -33,4 +27,7 @@ setup(
         'License :: OSI Approved :: Apache Software License',
         'Programming Language :: Python :: 3.8',
     ],
+    setup_requires=[
+        'wheel'
+    ]
 )