replace Union( ) with Union{ } everywhere

Author: JeffBezanson

base/pkg.jl

@@ -377,7 +377,7 @@ publish() = cd(Entry.publish,Dir.getmetabranch())
 build() = cd(Entry.build)
 build(pkgs::AbstractString...) = cd(Entry.build,[pkgs...])
 
-generate(pkg::AbstractString, license::AbstractString; force::Bool=false, authors::Union(AbstractString,Array) = [], config::Dict=Dict()) =
+generate(pkg::AbstractString, license::AbstractString; force::Bool=false, authors::Union{AbstractString,Array} = [], config::Dict=Dict()) =
     cd(Generate.package,pkg,license,force=force,authors=authors,config=config)