Test of gittea post-receive hook

README.md

 * VTK integration 
 
 ## Git 
-Lemma is hosted on several Git instances. 
+Lemma is hosted on several Git instances. Our main instance is at https://lemma.codes. 
 
 ## Team 
 Lemma is and has been developed by several organisations and people, including: University of Utah, Colorado School of Mines, US Geological Survey.