added roster method to team model
updated modelbase to use querystring core module instead of assembling the querystring manually.
updated team instance model to assemble urls correctly
added teams method to subseason that fetches team instances
added instances method on team model
Fixed Objet.keys exception
changed how getters are being defined to the more standards complient defineProperty
re-implemented querystring creation so that we can ignore null and undefined values
team instance urlroot now looks at options before this
fixed Object.keys issue again.
allow custom urls on teaminstance.list
Merge pull request #45 from tstmedia/team-players

Team Instances