Updated prescott-scores-details.csv info in the docs.

docs/introduction.rst

@@ -110,7 +110,27 @@ if you would like to use GnomAD v2.1.1, you should specify the version with '--g
 The most important output is prescott-scores.csv file, which produces entire single point mutational landscape for the protein. 
 
 In addition, there is a file called prescott-scores-details.csv. The file contains all information about the points modulated by population 
-information coming from gnomad file and non-modulated variants. 
+information coming from gnomad file and non-modulated variants. Here are a few lines from the example 
+
+.. code:: bash
+
+   mutant,ESCOTT,protein,log10frequency,labels,position,PRESCOTT
+   M1V,0.27,MLH1_normPred_evolCombi,999.0,,1,0.27
+   M1W,0.36,MLH1_normPred_evolCombi,999.0,,1,0.36
+   M1Y,0.36,MLH1_normPred_evolCombi,999.0,,1,0.36
+   S2A,0.06,MLH1_normPred_evolCombi,-5.55059765214601,,2,0.06
+
+There are seven fields in that file: mutant,ESCOTT,protein,log10frequency,labels,position,PRESCOTT. 
+Let's explain each field separately.
+
+1. mutant: M1V
+2. ESCOTT: A floating point ESCOTT score of the variant (0.27). 
+3. protein: This is a string derived from your input file name (MLH1_normPred_evolCombi). 
+4. log10frequency: If you gnomad file constains frequency information for this variant, you will have a value such as -5.55059765214601. When your gnomad file does not contain any frequency information for that variant, you will see 999.0 in that field. 
+5. labels: If your gnomad file constains 'Pathogenic', 'Pathogenic/Likely pathogenic' or 'Likely pathogenic' ClinVar labels, your labels field will be 1. If your gnomad file constains 'Benign', 'Benign/Likely benign' or 'Likely benign' ClinVar labels, your labels field will be 0. If there is not any Clinvar label, the field will remain empty. 
+6. position: An integer value clearly indicating amino acid position in your protein. 
+7. PRESCOTT: A floating point PRESCOTT score of the variant (0.27). 
+
 
 Finally, if you have both pathogenic and benign labels in the gnomad file, there will be a 'clinvar-vs-position.png' file showing how these labeled 
 variants are affected by population information.