Update README.md

Author: ktroule

README.md

@@ -25,10 +25,11 @@ pip install git+https://github.com/ktroule/sctools.git
 - **calculate_pca**: (to be tested). calculates the PCA on the adata without scaling the gene expression.
 - **load_markers**: load set of expression markers.
 - **pseudobulk_matrix**: creates a pseudobulk matrix by aggregating gene counts per user-defined group.
+- **clean_markers**: removes from a dictionary those genes not present in the adata.
 
 
 
 ### Notes
 To use R with jupyter notebooks you might need to install the following pacakges:
 - rpy2==3.4.2
-- anndata2ri==1.0.6
+- anndata2ri==1.0.6