Merge pull request #23 from suragnair/patch-1

Dynseq track documentation updates

docs/tracks.rst

@@ -291,10 +291,10 @@ Dynamic Sequence Tracks
 dynseq
 ~~~~~~
 
-``dynseq`` is a new track type which is proposed and initially developped by Surag Nai from Anshul Kundaje's lab at Stanford University.
-Its track file is based on ``bigWig`` format, it provides importance scores for each nucleotide in the genome, so we visualize them as a string of letters with different colors (for each nucleotide) and different heights scaled by the importance scores.
+``dynseq`` is a new track type which is proposed and initially developped by Surag Nair from Anshul Kundaje's lab at Stanford University.
+Its track file is the same as ``bigWig`` format. It provides scores for each nucleotide in the genome, which can be derived from using importance scoring methods on machine learning models. We visualize them as a string of letters with different colors (for each nucleotide) and different heights scaled by the importance scores.
 
-An example of loaded ``dynseq`` track is illustrated below:
+An example of loaded ``dynseq`` track highlighting an E2F motif instance is illustrated below:
 
 .. image:: _static/dynseq.png