Add comments and update README

README.md

@@ -3,7 +3,10 @@
 # Translations Catalogue Metadata
 
 ## Description
-...
+
+In this repo we present Jupyter Notebooks that help to
+- obtain ONB catalogue metadata about translations via SRU
+- analyze and visualize those data
 
 ## Visuals
 
@@ -17,10 +20,11 @@ Example plots that help to understand the example dataset:
 
 | | |
 |:-------------------------:|:-------------------------:|
-|<img src='img/lang_codes.png' alt='lang codes'>|<img src='img/lengths.png' alt='lengths'>|
-|<img src='img/places.png' alt='places'>|<img src='img/years.png' alt='years'>|
+|<img src='img/years.png' alt='years'/>|<img src='img/lengths.png' alt='lengths'/>|
+|<img src='img/places.png' alt='places'/>|<img src='img/lang_codes.png' alt='lang codes'/>|
 
 ## Installation
+
 Install the necessary requirements via `pip` with
 ```
 pip install -r requirements.txt