added execution of xUnit tests in release build
updated MSpec to V 0.6.1
simplified StyleCop integration
StyleCop works now.

Added StyleCop task to all project files
Replaced GitFlowVersion with custom build generating AssemblyInfo file with .g. (generated) in the filename
cleaned solution from R# code inspection errors and warnings
minor refactoring
changed unit test naming to match naming convention (Facts instead of Test)
changed target framework profile
added source files for symbols nuget package
using now StyleCop.MSBuild nuget package instead of StyleCop MSBuild target in tools folder.
added nuget package restore
fix to load StyleCop MSBuild targets from correct path
another try to fix failing build on TC
using now GitFlowVersionTask nuget package instead of tools\GitFlowVersion. StyleCop violations are now set to warning instead of error to work around a problem with GitFlowVersion creating AssemblyInfo files not compliant with StyleCop
Revert "added nuget package restore"

This reverts commit 5d2cd2012b323a95effb761f4459c1c8cc640970.

Conflicts:
	source/Appccelerate.Fundamentals.Facts/Appccelerate.Fundamentals.Facts.csproj
	source/Appccelerate.Fundamentals.Specs/Appccelerate.Fundamentals.Specs.csproj
	source/Appccelerate.Fundamentals/Appccelerate.Fundamentals.csproj
introduced Appccelerate development nuget packages
updated Appccelerate nuget package versions to match generated packages on TC
added .xml file to nuget package
updated Appccelerate.Development packages
added missing documentation file