Add Learn and Understand AngularJS course

6-hour paid course (with coupon) for beginners, jQuery users, and all
others. Teaches javascript concepts key to understanding Angular, how
AngularJS works, and building single page applications.
Merge pull request #202 from AnthonyPAlicea/master

Add Learn and Understand AngularJS course
Update README.md
Add John Papa's opinionated style guide under Lessons Learned
Merge pull request #203 from pyprism/patch-5

Update README.md
Merge pull request #205 from ajkerrigan/master

Add John Papa's opinionated style guide under Lessons Learned
Update README.md

Added link from @pyprism:
[AngularJS Tutorial: A Comprehensive 10,000 Word Guide](http://www.airpair.com/angularjs)
Update README.md

Added new link from @pyprism:
[AngularJS Best Practices: Directory Structure](http://scotch.io/tutorials/javascript/angularjs-best-practices-directory-structure)
Update README.md

added new section: Best Practices/Style Guides. Moved Boilerplates section up higher, and renamed it Boilerplates/Seed Projects
Update README.md
Update README.md
Update README.md

fixed ToC link
Update README.md

Added a couple of links to my personal Angular style guide and seed project
Update README.md

Cleaned up the Courses section. Removed a couple of courses, and added the following:
* [Pluralsight: AngularJS Patterns: Clean Code] (http://www.pluralsight.com/courses/angularjs-patterns-clean-code)
* [Pluralsight: AngularJS Line of Business Applications] (http://www.pluralsight.com/courses/angularjs-line-of-business-applications)
* [Building Mobile Apps With the Ionic Framework and AngularJS] (http://www.pluralsight.com/courses/building-mobile-apps-ionic-framework-angularjs)
Update README.md

Added: 
* [AngularJS style guide used at GoCardless] (https://github.com/gocardless/angularjs-style-guide)
Update README.md

Added:
[**Asynchronous form errors and messages in AngularJS] (http://jaysoo.ca/2014/10/14/async-form-errors-and-messages-in-angularjs/)

Also changed the ** indicators to highlight Angular 1.3 posts instead of 1.2
Update README.md

Cleaned up the Book section. Mostly to remove some older books that focused on Angular 1.0.x. Figure there isn't much point in recommending those older books anymore. Also updated Brad Green's book to point to the new edition.
Update README.md

Added:
* AngularJS: Looking Under the Hood: [Part 1](https://www.binpress.com/tutorial/angular-js-looking-under-the-hood/153), [Part 2](https://www.binpress.com/tutorial/angular-js-looking-under-the-hood/158)
Change Angular Course in videos, add it to courses

- Updated angularcourse.com in the videos section (updated title and description).
- Added angularcourse.com to courses section.
Update README.md