Update getting started (en-us)

[wormeyman]

I noticed that some of the URL's had changed in the get involved section such as GitHub and Twitter moving to https by default and google added a Hash Bang (#!) while twitter removed theirs.

Also would we want to link to the freenode webchat?

[redmunds]

Looks good.

Also would we want to link to the freenode webchat?

Sure. http://brackets.io uses http://webchat.freenode.net/?channels=brackets&uio=d4

[redmunds]

Thanks. Merging.

[peterflynn]

Hmm, we really should have updated all the other languages to match. @wormeyman Do you want to submit a PR that updates the same URLs in all the other locales of the Getting Started project? (Afaik none of these links vary by locale)

[wormeyman]

Sure @peterflynn I'll Look into it.

[peterflynn]

Thanks!

[wormeyman]

I did my commits on the release branch should i pull against that or the master branch? @peterflynn

edit: https://github.com/wormeyman/brackets/tree/Get-Involved-url-Update

[peterflynn]

@wormeyman The release branch is basically closed at this point, so please target at master now. Thanks for the fast response!