add links to README

Author: j-fu

README.md

@@ -7,11 +7,10 @@
 SimplexGridFactory
 ==================
 
-Contains convenience  interfaces to triangle (via  Triangulate.jl) and
-TetGen via TetGen.jl.  Code using it  needs to pass the Triangulate or
-the   TetGen   modules   as   parameters   to   the   constructor   of
-SimplexGridBuilder  and thus  needs to  adhere to  their respective
-license conditions. This package itself is MIT licensed.
+Provides `SimplexGridBuilder`, a convenience  interface to rhe triangle (via  [Triangulate.jl](https://github.com/JuliaGeometry/Triangulate.jl)) and
+TetGen (via [TetGen.jl](https://github.com/JuliaGeometry/TetGen.jl)) mesh generators.  Code using it  needs to pass the `Triangulate` resp.
+the   `TetGen`   module   as   parameter  to   the   constructor of `SimplexGridBuilder`  and thus  needs to
+adhere to  their respective license conditions. This package itself is MIT licensed.
 
 
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