Update README.md

Author: alemazzo

README.md

@@ -8,3 +8,19 @@ https://pypi.org/project/java-stream/
 ```bash
 pip install java-stream
 ```
+## Usage
+```py
+from stream import Stream
+
+# Generate a list of 100 random numbers
+Stream.randint(1, 100).limit(100).toList()
+
+# Generate a list of the numbers from 1 to 100
+Stream.iterate(1, lambda i: i + 1).limit(100).toList()
+
+# Generate a list of squares of the number from 1 to 100
+Stream.iterate(1, lambda i: i + 1).map(lambda x: x**2).limit(100).toList()
+
+# Generate a list of 0 with a lenght of 100
+Stream.generate(lambda: 0).limit(100).toList()
+```