Update README.md

Author: andermi

README.md

@@ -1,9 +1,12 @@
 # linear_segmentation
 Automatic sparse sampling of 1-D array into linear segments minimizing error
 
-# Install
+# Install from clone
 `pip install .`
 
+# Install from PYPI
+`pip install linear_segmentation`
+
 # Example
 `python -m linear_segmentation.examples.linear_segmentation_with_slider.py`