Add chains url

[kphed]

Addresses issue #51.

Changes

• Enable adding a chain config from a URL

Test

# First initialize your configuration for the relayer
$ relayer config init

# Then add a chain config by specifying its URL (using ibc0 chain's config from the demo)
$ relayer chains add -u https://raw.githubusercontent.com/cosmos/relayer/master/demo/ibc0.json

From https://gist.github.com/kphed/0b4bebcbdedbdb747d84cf18a7280795.

[jackzampolin]

Thanks for the contribution! Maybe setup a gist to test against with an example? Also just have that one comment on errors in the case of multiple flags

[kphed]

Thanks for the contribution! Maybe setup a gist to test against with an example? Also just have that one comment on errors in the case of multiple flags

Updated the PR msg with more details (sorry it was so vague) and the test gist details.

[kphed]

Thanks for the contribution! Maybe setup a gist to test against with an example? Also just have that one comment on errors in the case of multiple flags

Updated the PR msg with more details (sorry it was so vague) and the test gist details.

Np - thanks for all your hard work with IBC. Will help tackle the other issues over the coming weeks 🚀 .

[jackzampolin]

@kphed Thank you! And looking forward to more PRs 😉

[jackzampolin]

Argh, @kphed I've merged this into an old branch 🤦‍♂ Is there any way you can rebase on current master and push this PR again? This is my bad.

[jackzampolin]

Actually, please ignore last message. I've cherry-picked this commit into master. Sometimes I forget how to use git lol

[kphed]

Thanks @jackzampolin 🚀 !