Update README.md

Author: VHRanger

README.md

@@ -3,7 +3,7 @@
 
 # CSRGraphs
 
-This library aims to be a graph analogue to Pandas. It aims to provide fast and memory efficient operations for read-only graphs.
+This library aims to provide fast and memory efficient operations for large read-only graphs.
 
 By exploiting [CSR Sparse matrices](https://en.wikipedia.org/wiki/Sparse_matrix#Compressed_sparse_row_(CSR,_CRS_or_Yale_format)), we can efficiently pack and traverse graphs in memory (as long as we don't add/delete nodes often).