adding the defs subdir to the tree

diff --git a/README b/README
index c12cc67..eb0de6e 100644
--- a/README
+++ b/README
@@ -69,13 +69,16 @@ RACS
  |   |    ├── det-interGenes.sh
  |   |    ├── interGeneRegions.R
  |   |    └── interGenes.sh
+ |   └── defns
+ |   |   └── TT_gene.id
+ |   |   └── TT_mRNA.id
  |   └── test
  |        └── lst
  ├── datasets
  |   └── PostProcessing_Genic.xlsx
  |   └── PostProcessing_Intergenic.xlsx
  |   └── IBD1_ORF.xlsx
- |   └──IBD1_Intergenic.xlsx
+ |   └── IBD1_Intergenic.xlsx
  ├── hpc
  │   └── submission.pbs
  |   └── submission.slurm
@@ -401,6 +404,7 @@ Main paper to cite about RACS:
 - "RACS: Rapid Analysis of ChIP-Seq data for contig based genomes",
   Ponce et al., BMC in press.

+
 Publications where RACS has been used:
 - "The Med31 conserved component of the divergent Mediator complex in
   Tetrahymena thermophila participates in developmental regulation",