Update docs (#329)

Author: ggravlingen

README.md

@@ -1,3 +1,32 @@
 [![PyPI version](https://badge.fury.io/py/pygleif.svg)](https://badge.fury.io/py/pygleif)
 
-This library queries the API of GLEIF.org to return data about a specific entity company. The result is typed using `Pydantic` It is also possible to search for organisation id to find LEI codes and also to get child notes for a specific LEI code.
+This library uses Python to query the GLEIF.org's API. Currently, the library supports:
+- Fetching data for a specific API
+- Searching for a LEI using an organisation number
+
+The library is strictly typed using [`Pydantic`](https://github.com/pydantic/pydantic).
+
+### Example: fetching data for a specific LEI:
+
+```python
+from pygleif import PyGleif
+
+gleif_response = PyGleif("549300MLUDYVRQOOXS22")
+
+# Print the name of the company with the LEI above
+print(gleif_response.response.data.attributes.entity.legal_name.name)
+# prints UK EQUITY FUND (OFFSHORE)
+```
+
+### Example: search for a LEI using organisatio number:
+
+```python
+from pygleif import Search
+
+gleif_response = Search("5560142720")
+
+# Print the LEI of the company with the LEI above
+print(response.data[0].attributes.lei)
+
+# prints 213800T8PC8Q4FYJZR07
+```