Added requirements

setup.py

@@ -11,12 +11,12 @@ setup(
     url='https://thecodelabs.de/TheCodeLabs/PythonLibs',
     keywords=[],
     install_requires=[
-    ],
-    setup_requires=[
-        'wheel',
         'flask',
         'gevent'
     ],
+    setup_requires=[
+        'wheel'
+    ],
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Intended Audience :: Developers',