Improved the documentation file and added badges.
Improved the documentation file and added badges.

cekurte/wp-change-domain,jpcercal/wp-change-domain,cekurte/wp-change-domain,jpcercal/wp-change-domain,cekurte/wp-change-domain,cekurte/wp-change-domain,jpcercal/wp-change-domain,jpcercal/wp-change-domain