Microsoft-authentication-library-for-js: [msal-node] Add docs for B2C

[sameerag]

Library

• [x] @azure/[email protected]

Documentation location

• [x] docs.microsoft.com
• [x] MSAL.js Github Wiki
• [x] README file
• [ ] Other (please fill in)
• [ ] Documentation does not exist

Description

Add docs for B2C (Samples included)

[sameerag]

@derisen Anything else pending for node? If not, can we please close this?

[derisen]

@sameerag we should be good to go after merging this PR.

[sameerag]

Thanks @derisen. Linked the PR, this should auto close with the merge now.