Update Command-Line-Reference.markdown

Added, starting with NuGet 2.5 push to a UNC/Folder source
Update Command-Line-Reference.markdown

moved the change to new line
Update Command-Line-Reference.markdown

Moved the text to source parameter
Update Command-Line-Reference.markdown

added a new line
Update Nuspec-Reference.markdown

Added grouping explicit references
Update Nuspec-Reference.markdown

mixed mode references indentation fixed
Update Nuspec-Reference.markdown

updated to references
Merge branch 'nuget-2.5-deepakv' into nuget-2.5