pkg name corrected

Author: ulf1

setup.py

@@ -6,8 +6,8 @@ def read(fname):
     return open(os.path.join(os.path.dirname(__file__), fname)).read()
 
 
-setup(name='fracdiff',
-      version='0.3.0',
+setup(name='numpy-fracdiff',
+      version='0.3.1',
       description='Fractional Difference for Time Series',
       long_description=read('README.md'),
       long_description_content_type='text/markdown',