Update README.md

README.md

@@ -7,6 +7,7 @@ You can use `scrattch` to automatically install or update these packages:
 
 [`scrattch.io`](https://github.com/AllenInstitute/scrattch.io) - File handling and data formatting  
 [`scrattch.hicat`](https://github.com/AllenInstitute/scrattch.hicat) - **H**ierarchical, **i**terative **c**lustering for **a**nalysis of  **t**ranscriptomics  
+[`scrattch.bigcat`](https://github.com/AllenInstitute/scrattch.bigcat) - Clustering analysis for extremely large single cell dataset  
 [`scrattch.vis`](https://github.com/AllenInstitute/scrattch.vis) - Plotting functions for visualization of RNA-seq data  
 [`tasic2016data`](https://github.com/AllenInstitute/tasic2016data) - Data from Tasic, et al. (2016), which is used for demos