update build script
update build script

haraldsteinlechner/FsPickler,haraldsteinlechner/FsPickler,nessos/FsPickler,FsUnity/Unity3d.FsPickler,cloudRoutine/Unity3d.FsPickler,cloudRoutine/Unity3d.FsPickler,FsUnity/Unity3d.FsPickler,nessos/FsPickler,mbraceproject/FsPickler,wallymathieu/FsPickler,wallymathieu/FsPickler