fix #321 (0.6 deprecated syntax in colormaps)

Author: stevengj

src/colormaps.jl

@@ -63,7 +63,7 @@ ColorMap{T<:Real}(name::Union{AbstractString,Symbol},
                   g::AbstractVector{Tuple{T,T,T}},
                   b::AbstractVector{Tuple{T,T,T}},
                   n=max(256,length(r),length(g),length(b)), gamma=1.0) =
-    ColorMap(name, r,g,b, Array(Tuple{T,T,T},0), n, gamma)
+    ColorMap(name, r,g,b, Array{Tuple{T,T,T}}(0), n, gamma)
 
 # as above, but also passing an alpha array
 function ColorMap{T<:Real}(name::Union{AbstractString,Symbol},
@@ -88,11 +88,11 @@ function ColorMap{T<:Colorant}(name::Union{AbstractString,Symbol},
     if nc == 0
         throw(ArgumentError("ColorMap requires a non-empty Colorant array"))
     end
-    r = Array(Tuple{Float64,Float64,Float64}, nc)
+    r = Array{Tuple{Float64,Float64,Float64}}(nc)
     g = similar(r)
     b = similar(r)
     a = T <: TransparentColor ?
-        similar(r) : Array(Tuple{Float64,Float64,Float64}, 0)
+        similar(r) : Array{Tuple{Float64,Float64,Float64}}(0)
     for i = 1:nc
         x = (i-1) / (nc-1)
         if T <: TransparentColor