Merge pull request #41 from devlead/develop

Add quotes to MSBuild solution.
Merge pull request #42 from devlead/develop

Changed to use Cake.Core.Extensions Quoute method.
Merge pull request #43 from devlead/develop

Refactored NuGetPacker + Added NugetRestorer.
Simplified task graph.
Task names is not case sensitive anymore.
Updated usage example.
Updated release notes and increased version number.
Merge branch 'develop' of https://github.com/cake-build/cake into develop
Fixed issue with cleaning deep directory structures
Order matters when recursively deleting directories, for one
project kept getting:
"An error occured in task The directory is not empty."
solved this by recursively deleting bottom up, it might be a bit
slower, but ensures delets are done in correct order.