Update plot_shootout.jl

Disambiguate expression to avoid a parser error #407, not to mention that I can't be sure what is intended.
Please review; an alternate possibility is that it's `(10^6.0) / teval`.

Author: RossBoylan

perf/plot_shootout.jl

@@ -9,7 +9,7 @@ dim = ones(Int,size(tconstr,1))*(1:size(tconstr,2))'
 namelist = collect(take(cycle(testnames), length(dim)))
 ordlist =  collect(take(cycle(testord), length(dim)))
 dfconstr = DataFrame(t = vec(tconstr), name = namelist, ord = ordlist, dim = vec(dim))
-dfeval   = DataFrame(rate = vec(10^6./teval), name = namelist, ord = ordlist, dim = vec(dim))
+dfeval   = DataFrame(rate = vec((10^6) ./ teval), name = namelist, ord = ordlist, dim = vec(dim))
 
 flagBspline = (dfconstr[:name] .== "IBSpline") | (dfconstr[:name] .== "Grid")
 dfBconstr = dfconstr[flagBspline, :]
@@ -36,4 +36,4 @@ pGc = plot(dfGconstr, xgroup="dim", ygroup="ord", x="name", y="t", Geom.subplot_
 draw(PNG("constructionG.png", plotsize...), pGc)
 
 pGr = plot(dfGeval, xgroup="dim", ygroup="ord", x="name", y="rate", Geom.subplot_grid(Geom.point), Scale.y_sqrt, Guide.ylabel("Throughput (pts/s) by order"))
-draw(PNG("rateG.png", plotsize...), pGr)
+draw(PNG("rateG.png", plotsize...), pGr)