README.md in trackler-2.2.1.48

- old
+ new

@@ -1,15 +1,16 @@
 # Isogram
 
 Determine if a word or phrase is an isogram.
 
-An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter.
+An isogram (also known as a "nonpattern word") is a word or phrase without a repeating letter, however spaces and hyphens are allowed to appear multiple times.
 
 Examples of isograms:
 
 - lumberjacks
 - background
 - downstream
+- six-year-old
 
 The word *isograms*, however, is not an isogram, because the s repeats.
 
 ## Running the tests
 