(#158) Adding CodeAnalysis to Solution

- Started using PSBuild to invoke MSBuild
- Added Default All RuleSet for now, this can be changed
- Updated build.bat and build.ps1 to correctly call Debug by Default, and pass through release configuration
- Tabified files to be consistent
- Added necessary imports to get output file to work correctly
Merge pull request #166 from gep13/feature/Issue-158

Add FxCop into the build process
Upgraded project to .Net 4.5
Removed Ruleset file and Upload FPSConsole
Added back "this".
Merge pull request #167 from chocolatey/feature/Net-45

Upgraded project to .Net 4.5