update cover text

Author: ivenmarquardt

README.md

@@ -7,9 +7,8 @@
 
 # No-frills Natural Language Processing Library
 
-* focus: string processing, regular expressions, linear algebra
+* focus: string processing, regular expressions, and linear algebra
 * style: functional programming
-* data structures: balanced BST (heap/priority queue), list (stack), realtime queue, deque
-* data types: multimap, idempotent iterator, difference list, continuations, transducer
+* data types and structures: balanced BST (heap/priority queue), list (stack), realtime queue, deque, multimap, idempotent iterator, difference list, continuations, transducer
 * status: heavy work in progress...
 * author: Iven Marquardt