updated alexa-verifier-middleware to v1.0.0

[tejashah88]

There has been many underlying changes to alexa-verifier, particularly with improvements to the stability and security of the module. Recently it's reached v1.0.0, so I have thus updated the middleware module to reflect the recent changes.

[tejashah88]

Seems like there's a problem with node v9.2.0 and typescript? @lazerwalker

[lazerwalker]

Just pushed a fix to this branch that should fix CI. TypeScript frustratingly changed things so that a formerly-optional config key is now mandatory, so adding it in should fix things.

Otherwise, this looks 👍 to me!

[lazerwalker]

Fixed up the various other tslint issues that arose as a result of bumping versions.

The only slightly sketchy one is that we seem to be running into a dtslint/compiler bug that means it was incorrectly yelling at us for what should have been a valid TS definition. Had to manually add in a linter config to ignore that rule while I open an issue with the actual dtslint repo.

Will leave merging to you, but I'm satisfied? Your stuff looks good, and CI's green.

[tejashah88]

Thanks for helping out with the typescript shenanigans!