Update README: intent of the library

Co-authored-by: David Sankel <[email protected]>

README.md

@@ -17,7 +17,7 @@ Documentation and associated papers are licensed with the Creative Commons Attri
 
 // SPDX-License-Identifier: CC-BY-4.0
 
-The intent is that the source and documentation are available for use by people implementing their iterator types as well as people using the iterator_interface presented here as-is.
+The intent is that the source and documentation are available for use by people implementing their iterator types.
 
 The README itself is licesed with CC0 1.0 Universal. Copy the contents and incorporate in your own work as you see fit.