Merge pull request #1 from TetGen/jf/update-README

update README.

LICENSE

@@ -1,23 +1,3 @@
-TetGen License
---------------
-
-TetGen is distributed under a dual licensing scheme. You can
-redistribute it and/or modify it under the terms of the GNU Affero
-General Public License as published by the Free Software Foundation,
-either version 3 of the License, or (at your option) any later
-version. A copy of the GNU Affero General Public License is reproduced
-below.
-
-If the terms and conditions of the AGPL v.3. would prevent you from
-using TetGen, please consider the option to obtain a commercial
-license for a fee. These licenses are offered by the Weierstrass
-Institute for Applied Analysis and Stochastics (WIAS). As a rule,
-licenses are provided "as-is", unlimited in time for a one time
-fee. Please send corresponding requests to:
-tetgen@wias-berlin.de. Please do not forget to include some
-description of your company and the realm of its activities.
-
-=====================================================================
 GNU AFFERO GENERAL PUBLIC LICENSE
 
 Version 3, 19 November 2007
@@ -663,4 +643,4 @@ the specific requirements.
 You should also get your employer (if you work as a programmer) or
 school, if any, to sign a "copyright disclaimer" for the program, if
 necessary. For more information on this, and how to apply and follow
-the GNU AGPL, see <http://www.gnu.org/licenses/>.
+the GNU AGPL, see <http://www.gnu.org/licenses/>.

README

@@ -1,24 +0,0 @@
-This is TetGen version 1.6.0 (released on August 31, 2020)
-
-Please see the documentation of TetGen for compiling and using TetGen.
-It is available at the following link:
-
-            http://www.tetgen.org
-
-For more information on this product, contact :
-
-  Hang Si
-  Research Group of Numerical Mathematics and Scientific Computing
-  Weierstrass Institute for Applied Analysis and Stochastics
-  Mohrenstr. 39
-  10117 Berlin, Germany
-
- EMail: <si@wias-berlin.de>
- Web Site: http://www.wias-berlin.de/~si
-
-------------------- IMPORTANCE NOTICE -----------------------------
-
-BEFORE INTALLING OR USING TetGen(R) READ the 
-GENERAL LICENSE TERMS AND CONDITIONS
-
--------------------------------------------------------------------

README.md

@@ -0,0 +1,27 @@
+TetGen
+======
+
+TetGen is a program to generate tetrahedral meshes of any 3D polyhedral domains.  TetGen generates exact constrained Delaunay tetrahedralizations, boundary conforming Delaunay meshes, and Voronoi partitions.
+
+TetGen versions up to v1.6.0 have been developed by [Hang Si](https://github.com/sihang0592) during his affiliation with [Weierstrass Institute for Applied Analysis and Stochastics, (WIAS) Berlin](https://www.wias-berlin.de/software/tetgen).
+
+This repository provides the source code of the most recent versions of TetGen.
+The following releases are provided:
+
+- [v1.4.3, 2011](https://github.com/TetGen/TetGen/archive/refs/tags/v1.4.3.tar.gz): [MIT license with noncommercial clause](https://raw.githubusercontent.com/TetGen/TetGen/refs/tags/v1.4.3/LICENSE).
+- [v1.5.0, 2013](https://github.com/TetGen/TetGen/archive/refs/tags/v1.5.0.tar.gz): [AGPLv3 license](https://www.gnu.org/licenses/agpl-3.0.html).
+- [v1.5.1, 2018](https://github.com/TetGen/TetGen/archive/refs/tags/v1.5.1.tar.gz): [AGPLv3 license](https://www.gnu.org/licenses/agpl-3.0.html), recommended as most stable version.
+- [v1.6.0, 2020](https://github.com/TetGen/TetGen/archive/refs/tags/v1.6.0.tar.gz): [AGPLv3 license](https://www.gnu.org/licenses/agpl-3.0.html), most recent version with some rough edges.
+
+It is planned to resume active development of TetGen and to publish future versions of TetGen via this repository.
+
+## Documentation
+- Manuals are available in https://github.com/TetGen/Manuals.
+- A technical paper about TetGen is available at [Hang Si, "TetGen, a Delaunay-Based Quality Tetrahedral Mesh Generator". ACM Trans. on Mathematical Software. 41 (2), 2015](http://doi.acm.org/10.1145/2629697)
+  
+  
+## Commercial licensing
+
+TetGen versions developed at WIAS are distributed under a dual licensing scheme.  As an alternative to the use of TetGen under the AGPLv3 license, consider the option to obtain a commercial license for a fee.  These licenses are offered by the Weierstrass Institute for Applied Analysis and Stochastics (WIAS). As a rule, licenses are provided "as-is", unlimited in time for a one time fee.  Please send corresponding requests to: `tetgen at wias-berlin.de`.  Please do not forget to include some description of your company and the realm of its activities.
+
+Due to the change of affiliation of Hang Si, details about the continuation of this dual licensing scheme for future versions of TetGen will be announced in the future. Please feel free to contact us if you have any questions.