Added appveyor.yml

Removed version.xml
Moved CodeOnlyStoredProcedures.nuspec to solution root folder
Removed references to old Call() syntax for dynamic stored procedures.
Merge remote-tracking branch 'origin/develop' into feature/setup-appveyor
First attempt at build with appveyor.yml
Updated .sln file to reflect new structure of Build folder
Quoted wildcards in appveyor.yml
Removed Version option from nuget pack

This is because the version will now be set in .nuspec directly. Since
the release notes are hand authored anyway, this isn't too much of a
hassle.
Fixed errors in nuspec

Added artifact to capture build output in appveyor
Made nuget pack output verbose messages
Moved versioning to VersionInfo.cs
ReAdded the quotes to assembly versions
Added options to deploy to nuget
Updated T4 template for SPs that return results to pass the default TaskScheduler when executing Async. This should fix #1
Updated StoredProcedureParameterAttribute's properties to not be nullable. This will allow them to actually be set when used as parameters. Fixes #4
Added release notes to the nuspec, and set its version number.
Merge branch 'release/1.3.1-pre'