update readme

**Evaluating Machine Learning with Simulated Lissajous Scans for Fast Object Recognition and Rotation Estimation**

Simulated scans based on ModelNet40 with 45 additional rotations.

given a data file with `filename`, load the scan with the following code:
```
scan_pattern = 'lissajous' # 'lissajous', 'raster', or 'raster_r'
df_scan = pd.read_hdf(filename, key=scan_pattern)
```

README.md

@@ -3,7 +3,9 @@ license: cc
 tags:
 - PointCloud
 - 3D
-pretty_name: SimSca
+- Classification
+- Rotation Estimation
+pretty_name: SimScan
 size_categories:
 - 100B<n<1T
 ---