Add Spencer to AUTHORS file
Add Spencer to AUTHORS file

san650/ember-cli-page-object,san650/ember-cli-page-object,csantero/ember-cli-page-object,csantero/ember-cli-page-object,san650/ember-cli-page-object,bantic/ember-cli-page-object,mixonic/ember-cli-page-object,mixonic/ember-cli-page-object,bantic/ember-cli-page-object