Provide initial approximation on command line for examples/runtime.cpp
Provide initial approximation on command line for examples/runtime.cpp

huahbo/amgcl,ddemidov/amgcl,dondieselkopf/amgcl,dondieselkopf/amgcl,huahbo/amgcl,ddemidov/amgcl,ddemidov/amgcl,ddemidov/amgcl,huahbo/amgcl,dondieselkopf/amgcl