Add methods for Green Hopper Rapid Views

[adamgruber]

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Summary of Changes:

• Fixed lint
• Added methods:
  • getAllRapidViews - Returns all Rapid Views on the Jira server
  • getRapidViewConfig - Returns configuration object for a chosen Rapid View
  • getActiveSprintsForRapidView - Returns all sprints with the state 'ACTIVE' within a chose RapidView
  • getAllRapidViewData - Returns all data associated with a chosen Rapid View (including sprints and issues)
• Added tests for all new methods
• Updated documentation