README.md in trackler-2.2.1.102

- old
+ new

@@ -33,9 +33,9 @@
 ceylon compile && ceylon test $(basename source/*)
 ```
 
 ## Source
 
-Rosalind [http://rosalind.info/problems/rna](http://rosalind.info/problems/rna)
+Hyperphysics [http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html](http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html)
 
 ## Submitting Incomplete Solutions
 It's possible to submit an incomplete solution so you can see how others have completed the exercise.