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+Wee need to upload some results to Rosalind to check how it works. We cannot 
+currently upload the solution for "Finding All Similar Motifs" problem because
+wee need to solve some earlier problems.
+
+Thus, our job now is to:
+
+* write a class to solve this problem https://rosalind.info/problems/dna/
+* use already existing class (e.g. Sequence) which reads FASTA file
+* upload the results in Rosalind to check whether it works. On the bottom
+  of the https://rosalind.info/problems/dna/ page there is a button 
+  "Download dataset"
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