- fixes #24: removes links to nodejs sample wiki

Merge pull request #26 from microsoftgraph/feature/sdk-payload-support

Feature/sdk payload support

Merge pull request #27 from microsoftgraph/feature/ms-id-web-package

- fixes: #23 replaces git submodule by library reference

- adds detailed information on difference between auth types

- adds reference to java sample

- content review

Merge pull request #25 from microsoftgraph/feature/rich-notifications

Feature/rich notifications

- updates reference to submodule

- adds submodule update

- adds submodule update