Removing barrel export and explicitly exporting each component in base index.ts. Barrel exports of components cause @ViewChild(<className>) to give undefined in AOT builds (#184)

Author: ZachRHale

src/index.ts

@@ -1,4 +1,8 @@
-export * from './lib/components';
+export { WizardCompletionStepComponent } from './lib/components/wizard-completion-step.component';
+export { WizardNavigationBarComponent } from './lib/components/wizard-navigation-bar.component';
+export { WizardStepComponent } from './lib/components/wizard-step.component';
+export { WizardComponent } from './lib/components/wizard.component';
+
 export * from './lib/directives';
 export * from './lib/navigation';
 export * from './lib/util';