document stat command and additional example for mb command (#2385)
document stat command and additional example for mb command (#2385)

stat command was missing in the mc complete guide doc.
mb command did not have an example for --region flag.

Fixes #2376
minio/mc,balamurugana/mc,abperiasamy/mc,abperiasamy/mc,vadmeste/mc,krisis/mc,krisis/mc,balamurugana/mc,vadmeste/mc,minio/mc