Display "what's new" when installing a new app. prototype

[christiannelson]

Something like this:

Raygun will creating new app in directory zombie-tracker...

- Application Name: Zombie Tracker
- Project Template: carbonfive/raygun-rails4
- Ruby Version:     2.0.0-p247

Checking for the latest application prototype... v0.9.5. Downloading... done!

Yee-haw, there's a new version. These are the changes since the last version you used:

v0.9.5 - 2013/11/13
- Switch to sass from less, using bootstrap-sass.

v0.9.4 - 2013/11/10
- Fixed an indentation bug in a view template.

v0.9.3 - 2013/10/27
- bundle update FTW.
- Specify the minimum required version of raygun in .raygun-version.

Zap! Your application is ready. Next steps...