install tetgen on windows

1.download source code from the official wetbsite:

http://wias-berlin.de/software/tetgen/#Download

2. extract to a target directory, here which is like:

C:\work_files\tetgen1.5.0

3. open cmake to configure and generate the tetgen project of VS 2015

4. compile the source code in vs 2015

After getting that prompted dialog which means the building is successful, we can get an execute program named "tetgen.exe" in directory C:\work_files\tetgen1.5.0\build\Debug, done!

5.BTW, download the Tetview from the website for the future tetrahedral display.