fix setup.py so pip install does not fail

setup.py

@@ -1,8 +1,11 @@
 import setuptools
 
-from pip.req import parse_requirements
+try:  # for pip >= 10
+    from pip._internal.req import parse_requirements
+except ImportError:  # for pip <= 9.0.3
+    from pip.req import parse_requirements
 
-with open("README.old.md", "r", encoding="utf-8") as fh:
+with open("README.md", "r", encoding="utf-8") as fh:
     long_description = fh.read()
 
 setuptools.setup(
@@ -67,7 +70,7 @@ setuptools.setup(
         "g-mlp-pytorch",
         "x-clip",
         "x_transformers==1.0.4",
-        
+
         "bitsandbytes==0.35.0",
     ],
     classifiers=[