fix calculation of distance from plane to origin

fix calculation of distance from plane to origin
Merge pull request #1592 from sxop/master

fix calculation of distance from plane to origin
Update install.bat
Update install.sh
Update README.md
Update README.md
Update README.md
Update header.html
Update README.md
Fix for Windows 8.1
Update README.md
Updated file-format links
Correct array deallocation
Merge pull request #1610 from 0xc0dec/master

Correct array deallocation
Merge branch 'master' of github.com:gameplay3d/GamePlay