Update README.md

Author: schmiph2

README.md

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 Python implementation of objective quality and intelligibilty measures mentioned in Philipos C. Loizou's great [Speech Enhancement Book](https://www.crcpress.com/Speech-Enhancement-Theory-and-Practice-Second-Edition/Loizou/p/book/9781138075573). The Python implementations are checked with the MATLAB implementations attached to the book (see [Link](https://crcpress.com/downloads/K14513/K14513_CD_Files.zip))
 
-# Contribution
-If you would like to have an additional measure or if you find a bug/expected behaviour please create an issue.
-
 # Install with pip
 Install pysepm:
 ```