Spelling (#568)

* spelling: non-existent

* spelling: optional

Author: jsoref

lib/router.js

@@ -13,7 +13,7 @@ const namespaceToName = require('yeoman-environment').namespaceToName;
  * @constructor
  * @param  {Environment} env A yeoman environment instance
  * @param  {Insight} insight An insight instance
- * @param  {Configstore} [conf] An optionnal config store instance
+ * @param  {Configstore} [conf] An optional config store instance
  */
 class Router {
   constructor(env, insight, conf) {

test/cli.js

@@ -40,7 +40,7 @@ describe('bin', () => {
         done();
       };
 
-      process.argv = ['node', path.resolve(__dirname, '..', pkg.bin.yo), 'notexisting'];
+      process.argv = ['node', path.resolve(__dirname, '..', pkg.bin.yo), 'non-existent'];
 
       this.env.lookup = cb => {
         cb();