update README

Author: AtsushiSakai

PathPlanning/ModelPredictiveTrajectoryGenerator/neuralnet_init_pram_regressor.py

@@ -20,9 +20,14 @@ Path planning algorithm.
 
 This script is a path planning code with model predictive trajectory generator.
 
+Path optimization sample:
 
 ![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/PathPlanning/ModelPredictiveTrajectoryGenerator/kn05animation.gif)
 
+Loopup table generation sample:
+
+![PythonRobotics/figure_1.png at master · AtsushiSakai/PythonRobotics](https://github.com/AtsushiSakai/PythonRobotics/blob/master/PathPlanning/ModelPredictiveTrajectoryGenerator/lookuptable.png)
+
 see: 
 - [Optimal rough terrain trajectory generation for wheeled mobile robots](http://journals.sagepub.com/doi/pdf/10.1177/0278364906075328)