Install react-test-renderer, and Fix to react-test-renderer/shallow

[kaekasui]

対応内容

#288 一部、warningsを解消

The exception is shallow rendering, which is not DOM-specific. The shallow renderer has been moved to react-test-renderer/shallow.

// Before (15.4 and below)
import { createRenderer } from 'react-addons-test-utils';

// After (15.5)
import { createRenderer } from 'react-test-renderer/shallow';