Fix example code in README.md
Fix example code in README.md

quaertym/active-model-adapter,ember-data/active-model-adapter,bmac/active-model-adapter,jcope2013/active-model-adapter,sly7-7/active-model-adapter,blimmer/active-model-adapter,blimmer/active-model-adapter,sly7-7/active-model-adapter,bmac/active-model-adapter,ember-data/active-model-adapter,jcope2013/active-model-adapter,bmac/active-model-adapter,quaertym/active-model-adapter,jcope2013/active-model-adapter,bmac/active-model-adapter,blimmer/active-model-adapter,fivetanley/active-model-adapter,fivetanley/active-model-adapter,fivetanley/active-model-adapter,blimmer/active-model-adapter,quaertym/active-model-adapter,ember-data/active-model-adapter,fivetanley/active-model-adapter,sly7-7/active-model-adapter,jcope2013/active-model-adapter,quaertym/active-model-adapter,sly7-7/active-model-adapter