add lithium as submodule

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "libraries/li3_paginate"]
 	path = libraries/li3_paginate
 	url = git://github.com/edude03/li3_paginate.git
+[submodule "libraries/lithium"]
+	path = libraries/lithium
+	url = git://github.com/UnionOfRAD/lithium.git

libraries/lithium

@@ -0,0 +1 @@
+Subproject commit 463e0743b7a1e01dba9e73f33c42609175dbcc52