[configure] replaced python with python3.

configure.sh

 #!/bin/bash
 # Use the newest version of python3
 pip3 install pip --upgrade --user
-python -m pip install numpy --user
-python -m pip install pandas --user
-python -m pip install matplotlib --user
-python -m pip install seaborn --user
-python -m pip install scikit-learn --user
-python -m pip install tqdm --user
-python -m pip install chaospy --user
-python -m pip install emcee --user
-python -m pip install tables --upgrade --user
-python -m pip install h5py --user
+python3 -m pip install numpy --user
+python3 -m pip install pandas --user
+python3 -m pip install matplotlib --user
+python3 -m pip install seaborn --user
+python3 -m pip install scikit-learn --user
+python3 -m pip install tqdm --user
+python3 -m pip install chaospy --user
+python3 -m pip install emcee --user
+python3 -m pip install tables --upgrade --user
+python3 -m pip install corner --user
+python3 -m pip install h5py --user
 #python -m pip install pickle5 --user