fix(package.json): Update dependency to use Angular 2.4.0

[ThomasBurleson]

flex-layout needs this Angular Fix in angular/#master`: fixed to support #34.

• v2.3.x and higher also provides support for important Component Inheritance

flex-layout package.json's should be updated once ng v2.4.0 is available.

[ThomasBurleson]

Fixed with SHA 608c5c1

[pdavin-zz]

The NPM peer dependencies still say @angular/flex-layout depends on Angular ^2.2.3. Should that say 2.4.0?
$ npm view @angular/flex-layout

I'm having trouble linking flex-layout into my AoT build (ngc is hitting compilation errors in flex-layout) and am wondering if it's due to the fact I'm still on Angular 2.2.4.

[ThomasBurleson]

General discussion and how-to questions should be posted to the community forum areas:

• Google Groups
• Gitter Channel - note this will be available soon...

Closing this issue as 'invalid'. Thank you.