Add link to community guidelines as CODE_OF_CONDUCT.md
Add link to community guidelines as CODE_OF_CONDUCT.md

ember-cli/ember-export-application-global,Kuzirashi/ember-export-application-global,ember-cli/ember-export-application-global,quaertym/ember-export-application-global,mike-north/ember-export-application-global,Kuzirashi/ember-export-application-global,quaertym/ember-export-application-global,mike-north/ember-export-application-global