Update README.md added the LearnCode.academy vid

The free LearnCode.academy video on youtube from Will Stern covers some of the ui-router quite nicely.
Merge pull request #1238 from alexanderchan/patch-1

Update README.md added the LearnCode.academy vid
feat(typescript): Add typescript definitions for component builds

- Add api/angular-ui-router,d.ts typescript definition file
- Add reference to typescript definition in component.json

Simplifies usage of this library by typescript developers (+2 squashed commits)
Squashed commits:
[531f0b8] remove angular reference
[268643f] added typescript definition for component builds