Added support for Reports.Read.All scope

[mlafleur]

The Reports.Read.All scope is required for users to exploer the various
reports currently in the beta endpoint. This scope is currently in
preview and requires consent.

[msftclas]

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[dan-silver]

Thanks Marc! That's odd the build is failing on Node 7 but works on Node 8. I doubt it's related but want to take a look before merging.

[mlafleur]

Were you able to sort out why Travis was failing for 7 but not 8?

[dan-silver]

That issue was fixed in #47. This project was configured to use TypeScript in 2.x and 2.4 was just released with stronger type checking that causes RxJS to not compile. We'll stick with 2.3 for now. For more info on their compile bug, see ReactiveX/rxjs#2540

[dan-silver]

So this PR was merged in with #48 after applying the fix to use TS 2.3 and all the tests passed. Thanks again Marc!