conversions to git

entries/hypercube.md

@@ -5,7 +5,7 @@ _Hypercube is a golf-like puzzle game around a tesseract (4D hypercube)._
 - Home: http://harmen.vanderwal.eu/hypercube/
 - State: mature, inactive since 2016
 - Keywords: puzzle, open content
-- Code repository: (see home)
+- Code repository: https://gitlab.com/osgames/hypercube.git (import of sources)
 - Code language: Java
 - Code license: GPL-2.0
 - Assets license: LGPL
@@ -13,3 +13,5 @@ _Hypercube is a golf-like puzzle game around a tesseract (4D hypercube)._
 Developer: Harmen van der Wal
 
 ## Building
+
+- Build system: Make