update angular2 boilerplate to latest version

[Francesco Soncina]

hi,

i can see that angular2 included in the boilerplate is outdated (beta.12 vs rc4).
it would be nice update that boilerplate to the latest version of the framework.

[Fabio Biondi]

Hi Francesco,
I have created this bin (updated Angular 2.0.2 final)
http://www.webpackbin.com/EkIFghZAW

[Nirmal Kumar Velupillai]

Good one. And i have added some flavour on that. which includes routing and materialize css.
http://www.webpackbin.com/NJL2s9YCW
(OR)
http://www.webpackbin.com/4JjqYsF0Z