Added Instrument Editor to Master View Controller
Added a simple csd for the instrument editor sub-app.
Created an example instrument editor that utilized the new API method updateOrchestra
Added the instrument editor example.
Added an updateOrchestra method to the Csound-for-iOS API
Removed CsoundObjListener stuff unused in this example.
Added the Instrument Editor Example to the OSX side.
Copied the CSD for the instrument editor from the iOS example to the OSX example.
Added updateOrchestra to the API for Csound-for-OSX
Merge pull request #373 from aure/updateOrchestra

Added Csound6's ability to update the orchestra to the Csound for iOS/OSX APIs