feat(node): relax Node version requirement to >= 6 (testing-library#14)

feat: Add getByTestId utility (testing-library#10)

* feat: Add getByTestId utility

* Updates to getByTestId documentation

* minor tweaks

feat(typings): add ts definitions (testing-library#7)

* feat(typings): add ts definitions

* chore(contributors): add myself

fix(TypeScript): add missing 'typings' folder to files property (test…

…ing-library#9)

feat(typings): add ts definitions (testing-library#7)

* feat(typings): add ts definitions

* chore(contributors): add myself

feat(unmount): add `unmount` to render object

fix(sel): match react native web's testID prop

Closes testing-library#1

fix(release): manually release a major version

There was an issue with a major release, so this manual-releases.md
change is to release a new major version.

BREAKING CHANGE: release 1.0.0

feat: initial release