Add license statement to README files

README.md

@@ -7,3 +7,7 @@ The aim of the project, funded by PNRR-CNS, is to refactor the original, very ol
 The current implementation offers a set of elementary tests to check that the original FORTRAN code can be compiled and executed on a limited set of pre-defined input data. The functionality of this initial stage can be verified by cloning the gitLab repository on a local machine and building the binaries from the `src` folder.
 
 *NOTE:* The building process requires a working installation of the GNU Compiler Collection (`gcc`), of the GNU FORTRAN compiler (`gfortran`) and of the GNU `make` builder.
+
+# License
+
+This project is distributed under the terms of the *GNU General Public License V3.0 or later* (GPL-3.0-or-later). Check the contents of the *COPYING* file for further details.
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build/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Folder instructions
 
 This directory collects all the output of make builds.

containers/docker/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Docker support for the NP-TMcode project
 
 This Dockerfile allows to create mainly:

containers/singularity/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Singularity support for the NP-TMcode project
 
 This `np-tmcode-run.def` file allows to create a np-tmcode-run image, that contains only the pre-built executables, python test scripts, compiled documentation, and the minimal runtime to run them

doc/src/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Folder instructions
 
 This directory contains the material to build the project documentation with *doxygen*.

src/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Folder instructions
 
 This directory collects the source code of the original programs and the development folders.

src/scripts/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Folder instructions
 
 This directory contains scripts and tools to evaluate the code functionality.

test_data/README.md

+Distributed under the terms of *GNU GPL-3.0-or-later*
+
 # Folder instructions
 
 This directory collects the input files to test the code.