Extended README

diff --git a/README b/README
index 0a6cfcc..9e5145e 100644 (file)
--- a/README
+++ b/README
@@ -3,3 +3,5 @@ This is a collection of the 'unique word count' implemented in many languages.
 All software should read the file passed as argv[1], parse all words in it, and
 count their occurence, and then print the words with highest occurence first and their occurences,
 one by line.
+
+Words should be matched by the regular expression [a-z']+ case insensitive.