Merge pull request #99 from Phylliade/rc/3.1

Fix setup.cfg

Author: Phylliade

setup.cfg

@@ -2,7 +2,6 @@
 name = ikpy
 version = attr: ikpy.__version__
 description = An inverse kinematics library aiming performance and modularity
-long_description = file: README.md
 classifiers =
     Programming Language :: Python :: 3,
     Topic :: Scientific/Engineering