Merge pull request #17 from dancergraham/feature/color

docs: Now in technicolor! 🏳️‍🌈

Author: dancergraham

README.md

@@ -20,14 +20,23 @@ This python library wraps the [rust e57 library](https://github.com/cry-inc/e57)
 
 ```python
 >>> import e57
->>> e57.read_points(r"pointcloud.e57")
+>>> pc = e57.read_points(r"pointcloud.e57")
+>>> pc.points
 array([[-23.25304444, -28.17607415, -13.44830654],
        [-23.28290139, -28.02118905, -13.44237764],
        [-23.26799723, -27.9039115 , -13.43430738],
        ...,
        [ 23.2458152 ,  25.4866642 ,  12.45043932],
        [ 23.22830673,  25.58055374,  12.49285875],
        [ 23.25270363,  25.45909652,  12.54284554]])
+>>> pc.color
+array(([0.3019608 , 0.3529412 , 0.23137255],
+       [0.21176471, 0.26666668, 0.12941177],
+       [0.21960784, 0.27058825, 0.13333334],
+       ...,
+       [0.5803922 , 0.58431375, 0.49019608],
+       [0.41568628, 0.43529412, 0.33333334],
+       [0.21568628, 0.25882354, 0.1254902 ]], dtype=float32)
 ```
 
 We need a tutorial - could you write one based on our tests?