plWordNet api docs extended, database downloading added

README.md

@@ -5,14 +5,28 @@ PLWN API
 PLWN API is a library for accessing the plWordNet lexicon in a Python program.
 
 
+Setup
+=====
+
+To use the api one has to download a default data dump. To setup the api you have to `download` command from plwn library.
+
+```python
+import plwn
+
+plwn.download()
+```
+
+The script will download a default plWordNet dump in sqlite format. The default dump is a compressed version of plWordNet 4.5 - a database file `default_model` should be downloaded to your disk.
+
+
 Usage
 =====
 
 Access is provided using a PLWordNet object, with data loaded from the database
-dump.
+dump. To get thethe database dump use the `download` method (see ,,Setup'' section).
 
     >>> import plwn
-    >>> wn = plwn.load_default()
+    >>> wn = plwn.load("./default_model")
 
 Using that object, it's possible to obtain synset and lexical unit data.
 
@@ -80,7 +94,7 @@ To load this version at a later date, use `plwn.load(path)` instead of `plwn.loa
     >>> api = plwn.load("storage-dumps/plwn-new.db")
 
 
-Downloading API dumps
+Manually downloading API dumps
 =====================
 
 In order to download one of the dumps available at https://minio.clarin-pl.eu/minio/public/models/: