Add datapackage-jl to pkg.julialang.org

[serahkiburu]

Get datapackage-jl published as a registered Julia library on pkg.julialang.org/.

Guide: https://docs.julialang.org/en/v0.6.3/manual/packages/#Tagging-and-Publishing-Your-Package-1

[loleg]

This needs resolving of #12 first, and I think that we should focus on publishing TableSchema first as it's more complete, then re-opening this issue later.

[loleg]

Reopening on request thanks @serahrono

[s-celles]

Publishing package can be done using https://github.com/JuliaRegistries/Registrator.jl (instead of https://github.com/attobot/attobot which now only tag packages for Julia 0.6 )

[loleg]

Great, thanks for the tip!

[s-celles]

https://github.com/JuliaRegistries/TagBot is another useful Github bot for tagging release

[loleg]

There's a lovely new home for Julia packages. Who is motivated on giving this library another push? 😏 https://juliapackages.com/p/tableschema