GIT: README.txt: removed

README.txt

-2013-01
-
-- to UPstream added allocation of communicators
-- added communicators to lduMesh,lduInterface and (indirectly)
-  to lduInterfaceField
-- gamg agglomeration allocates new communicator for every level
-- in all linear solvers/smoothers/preconditioners make they use
-  communicator
-- added lots of warnings if using unexpected communicator (UPstream::warnComm)
-- did LUScalarMatrix for 'directSolveCoarsest'