Version update in README.

Author: lima1

README.md

@@ -45,7 +45,7 @@ To get the lastest stable version from
 currently only available from GitHub directly):
 
 ```
-conda install -c bioconda bioconductor-purecn=2.8.1
+conda install -c bioconda bioconductor-purecn=2.12.0
 ```
 
 A [Dockerhub](https://hub.docker.com/r/markusriester/purecn) image of the