Mention Promise / async support in the README

[Rycochet]

Looking into using this and wanted Promise support, but it's only really mentioned via the PR #286 and original (closed) issue #139

Would be useful if they were referenced in the readme so it's easier to find out about ;-)

[pksunkara]

Would welcome a pr Pavan Kumar Sunkara

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On Sat, Jun 23, 2018, 12:20 Rycochet ***@***.***> wrote: Looking into using this and wanted Promise support, but it's only really mentioned via the PR #286 <#286> and original (closed) issue #139 <#139> Would be useful if they were referenced in the readme so it's easier to find out about ;-) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#314>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAKqb61K7sitRgL60PHgtcbv9IPBx0Jzks5t_hZygaJpZM4U0u_u> .

[Circuit8]

I found the same issue, here is the PR: #320