Updating home repo samples to use latest bits from dev branch feed

1. Updated samples to use Kestrel for cross plat
2. Updated "configurations" in project.json to "frameworks"
3. Updated readme to include instructions on Kestrel
Missed Kestrel package from HelloMvc sample.
Updating kvm scripts in the home repo master branch
Fixing samples to be shipped for CTP3

This also includes some of the samples project.json feed discussed like remove version attribute, changing case of Kestrel to 'kestrel'
Fixing the nuget.config feed to point to the new feed for master.
Fixing readme with a pinned build of KRE.
Merge pull request #122 from aspnet/fixmasterfeed

Fixing samples to be shipped for CTP3
Adding instruction to get KRE from master feed.
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Add badges to show latest KRE versions
Merge pull request #136 from Alxandr/master

Add badges to show latest KRE versions
Update README.md

Change badge hyperlinks to go to the gallery.
Update README.md

Fix hyperlinks.
Merge pull request #1 from aspnet/master

同步