Merge pull request #423 from ihnorton/metadata-v2

Tk v0.2.8 and Cairo v0.2.9
Tag MATLAB v0.1.1
Homebrew: move under JuliaLang
Tag DataFrames v0.3.15
Tag Gadfly v0.1.18
Tag YAML v0.1.4
Merge branch 'metadata-v2' of git://github.com/JuliaLang/METADATA.jl into metadata-v2
Tag Homebrew v0.0.1
Tag SortingAlgorithms v0.0.1
Tag Meshes v0.0.1
Merge branch 'metadata-v2' of git://github.com/JuliaLang/METADATA.jl into metadata-v2
Tag DoubleDouble v0.0.0
Merge pull request #424 from simonbyrne/metadata-v2

Tag DoubleDouble v0.0.0
Tag ImmutableArrays v0.0.1
Merge branch 'metadata-v2' of git://github.com/JuliaLang/METADATA.jl into metadata-v2
Tag ImmutableArrays v0.0.2
Tag Gadfly v0.1.19
Merge pull request #425 from twadleigh/metadata-v2

Meshes.jl and ImmutableArrays.jl brought up to date with v0.2 and tagged with v0.0.1.
Tag Gurobi v0.1.3
Tag MathProgBase v0.1.0