Added EmployeeID field

Update User.go

Update User.go

Update go.mod

Added OfficeLocation property to User

Merge pull request open-networks#22 from open-networks/develop

Fixes open-networks#17: docs: add documentation for enabling and deleting a user

Merge pull request open-networks#16 from open-networks/develop

Add DisableAccount and DeleteUser functions, write unit tests for new user funcs, update documentation

GraphClient: fix typo

Readme: add build status badge, fix formatting and dot