message: Warn if naive singularize method receives a word that doesn't end in "s"
  Also fixes a nearby spelling errors in docs
diff: @@ -161,7 +161,7 @@ export default class Schema implements Evented, RecordInitializer {
  * A naive pluralization method.
  *
  * Override with a more robust general purpose inflector or provide an
  - * inflector tailored to the vocabularly of your application.
  + * inflector tailored to the vocabulary of your application.
  */
  pluralize(word: string): string {
  return word + 's';
  @@ -171,12 +171,15 @@ export default class Schema implements Evented, RecordInitializer {
  * A naive singularization method.
  *
  * Override with a more robust general purpose inflector or provide an
  - * inflector tailored to the vocabularly of your application.
  + * inflector tailored to the vocabulary of your application.
  */
  singularize(word: string): string {
  if (word.lastIndexOf('s') === word.length - 1) {
  return word.substr(0, word.length - 1);
  } else {
  + console.warn(
  + `Orbit's built-in naive singularization rules cannot singularize ${word}. Pass singularize & pluralize functions to Schema to customize.`
  + );
  return word;
  }
  }
  