Merge pull request #4 from Differential/master

add nba getRoster
Updating package
Merge pull request #5 from Differential/master

NBA Rankings and MLB Argument Order
Merge branch 'master' of github.com:rgerard/node-sportsdata
Bumping the version
Merge branch 'master' of https://github.com/rgerard/node-sportsdata
check for error before looking at responce