Conditional props

[oliverjam]

In your Egg component you're rendering two complete copies of the Screen in two branches of an if statement, even though there's only actually a single prop different (as far as I can tell just level is missing). You can conditionally set a prop with a ternary, e.g. level={this.state.name ? this.state.level : null}.

This probably isn't relevant if you made the changes suggested in #7 though