Adding PlayerIOClient.dll reference in proj file

This cross-references pull request #1
Added build status
Clean the namespaces up a bit

Add AuthType enum so we don't use a string to store the auth type.
Update README.md
Merge pull request #2 from Express50/patch-2

Clean the namespaces up a bit
Use 'var' because variables are implicity typed
Use const for game id

The game id is now uniform across the entire project
Removing unused directives
Don't need to assign values to AuthTypes