* Add react-daterange-picker
* Fix 2-space to 4-space and add semicolon
DefinitelyTyped contributing says 'use tabs or 4-space indentation'.
* Remove declare var
declare var did not effected to build and run application.
* Add comment
Use Literal Types after TypeScript 2.0 GA released.
* Fix file name
Change react-daterange-picker-test.tsx to react-daterange-picker-tests.tsx
