Remove the functions which generated Nuget packages for Windows.
Add function New-UnifiedNugetPackage to generate nuget packages for each assembly with unix and windows runtimes.
Add function New-NuSpec and New-ReferenceAssembly for creating the required items forNew-UnifiedNugetPackage.
Add a sample for cross platform project with conditional compilation for Linux.
Add function Publish-NugetToMyGet to publish nuget packages to powershell.myget.or
The updates to build.psm1 and packaging.psm1 create a single package (per bitness), which works on all the Windows OS versions, namely Windows 7 / Windows Server 2008 R2, Windows 8.1 / Windows Server 2012 R2, Windows 10 / Windows Server 2016.
* Update release documentation to reflect the desired release steps and order.
* Update in-doc links
* Update .spelling
* Address comments
* Additional changes to build/package example
* Update .spelling
* Remove another internal URL
* Name and link updates could be automated
* Move 'Note' to the top of 'Release Steps' section