Updated the Readme, The test 1D Sod problem with some files (run_tests) to run the test on diverse mesh sizes by doing e.g ./run_tests Sod B1 from the B1 folder, and a python script to plot B1,B2,B3 on the diverse meshes and for different variables

Updated 1D code. Models available: linear transport, lineal transport damped, Burgers, SW, Euler, waves.  There are also cubature elements (Lagrange in gauss lobatto points) There is also a source that must be defined in variable_def, and utils can help defining it. See SW for an example. Tested convergence on lin Scalar, Burges,Euler, more or less correct. Scheme 5 for shocks is working on Sod Euler, Dam Break (wet) SW.