fix git repo in requirements

tests_requirements.txt

@@ -1,2 +1,2 @@
--e git://github.com/buxx/synergine.git
--e git://github.com/buxx/synergine_xyz.git
+git+http://github.com/buxx/synergine.git
+git+http://github.com/buxx/synergine_xyz.git