Update README with GRT-30M suite, GRT_Whitepaper.pdf, GNU Free-as-in-Freedom statement, and matterwave.ai citation

README.md

@@ -130,7 +130,7 @@ All Geometric Rotation Transformer (**GRT**) model weights, polar tokenizers, tr
 ```bibtex
 @techreport{householter2026grt,
   title       = {The Geometric Rotation Transformer: A Purely Rotational Foundation Architecture},
-  author      = {Householter, David and {The MatterWave AI Team}},
+  author      = {Householter, David},
   institution = {MatterWave AI},
   year        = {2026},
   url         = {https://matterwave.ai}