[Refactor] Release Version 3.0

[g-cassie]

Changes are detailed in the new readme.md. I have been working with @Emerson throughout on this so we are both on the same page.

Some key points:

• You must be on Ember 2.0+ (1.13 probably works but we will not officially support it)
• Even better if you are on Ember 2.3+ so you can use the hash helper
• This is a major release so your app will break when you upgrade. The main thing you will need to do is change all your type='input | select | textarea' attrs to widget='input | select | textarea'.
• Yes, we are using two-way bindings for form inputs.

[Emerson]

This is some really amazing work and represents a much clearer vision than what I had originally written.

If you're interested, I think we should consider moving this into its own Github org. Also going to chat with one of the designers at TWG about maybe getting a hot logo.

[g-cassie]

@Emerson Awesome thanks for the review. I am going to fix the typos. For now I will just remove everything talking about validation. I have a vision for that too now - another big project but mainly drawing on code I have already written in my private repos. I think we can make this a one stop form solution - but keep it pluggable so people can just use the UI stuff if they want or just use the validations stuff.

I don't have a strong opinion but maybe we could shorten the name to "Form Master"? Just because we are using the fm prefix everywhere so it effectively is the name that the addon is being referred to by. This is not a strongly held opinion so feel free to say no to that.

[Emerson]

I think it's still worth leaving in the quip about validation and how passing errors works - just wasn't sure if you had any examples for client side validation a onUserInteraction hook or something.

I'll think over the name stuff and we can connect soon and chat.

[g-cassie]

@Emerson great, just pushed an updated Readme with your changes and some other fixes.