update README (and test commit)

README.md

 # ARC mininmal Example RNASeq
 
+This is a minimal Example ARC packaging an mRNA-Seq dataset with metadata and computations. 
 
-## Notes
-
-- CWL not yet implemented 
 
+## Notes and ToDos
 
-
-### isa.assay
+### Experimental metadata in isa.assay.xlsx
 - split GEO SWATE templates into four sheets 
     - 1SPL01_plants
     - 2EXT01_RNA
@@ -15,16 +13,19 @@
     - 4COM01_RNASeq
 
 
-### adding big data via git lfs 
+### Adding large raw data via git lfs 
+
+1. Before addind the files to the ARC, track them via `git lfs`
 
 ```
 git lfs track "*.fastq.gz"
-
 git lfs track "01_kallisto_index"
 
 ```
 
-add big data files to respective folder
+2. Move / add the large data files to the respective folders
+
+3. Add them via `git add`
 
 ```
 git add assays/Talinum_RNASeq_minimal/dataset/
@@ -32,4 +33,8 @@ git add runs/run1/01_kallisto_index
 
 ```
 
+4. Commit
+
+## To Do's
+- CWL not yet implemented