Invalid example in README

[r3h6]

In the example code of the README the scope property is defined as string, but it must be an array.

Invalid code: $provider->scope = 'openid profile email offline_access ' . $baseGraphUri . '/User.Read';

[decomplexity]

From memory, 'scopes' can be specified as either a string of space-separated substrings or as an array of strings.
AbstractProvider.php tests if the scope specified is an array; if so, it implodes the array into a string of substrings that are delimited by scopeSeparator.
TheNetworg's Azure.php specifies public property scopeSeparator as ' ' (i.e. a single space)

[I am currently travelling so perhaps OP can try both and report back Tnx]