Merge pull request #781 from sequence/universalapping

Added Universal Windows Apps to TipCalc
plugin manager change for #776
capital changes - for #768
Missing nuspec shared assemblies for portable universal apps
Merge branch 'universalapping' of github.com:slodge/MvvmCross into universalapping
Updated WindowsCommon PhoneCall Plugin to use tel: protocol on win81 and PhoneCallManager on wpa81