correct user tracking cookie name
Merge pull request #92 from rudasn/change/issue-91-bad-cookie-name

correct user tracking cookie name
Change anonymous global function to factory which can create additional Raygun objects with their own closure

(for their own apikey etc)
Provide a 'constructor' function on Raygun

This returns a brand new Raygun, with no api key etc set
Docs/version/artifacts
Rebased artifacts