Initial pre-release

Mesh files are used in FEM solutions for PDE problems to describe the geometry of the problem and the materials.

This package is used to parse a 2D mesh file in ATLAS format and plot the 2D mesh using a plot3D function, polygon2D. The function readMeshFileATLAS is loading a mesh data file in ATLAS format. Then use plotMesh to plot the data (elements and nodes) composing the mesh.

This package is using R6 (object oriented R allowing easy manipulation of nodes and elements in the data structure).