5.2.0

Update various dependencies, including:

babel-jest           ^12.0.0  >>  ^15.0.0
eslint               ^2.0.0   >>  ^3.0.0
eslint-plugin-react  ^4.2.3   >>  ^6.0.0
jest-cli             ^13.0.0  >>  ^15.1.0
react                ^15.0.0  >>  ^15.3.0
react-dom            ^15.0.0  >>  ^15.3.0

Aside from the dependencies, the default test file extension has been changed from __tests__/index.js style to *.spec.js. The primary reason was reduced confusion due to the test file living alongside what it's targetting; it's also harder to accidentally forget the tests exist for a file in general when they're co-located in the same directory. This fits into the organization guidelines set forth in A maintainable front-end project structure (2016).

Before:

/
    component-x/
        __tests__/
            index.js
        index.js
    component-y/
        __tests__/
            index.js
        index.js

After:

/
    component-x/
        index.js
        index.spec.js
    component-y/
        index.js
        index.spec.js

Thank you for using generator-enigma!