add Atk class help

source/ATK/sc/HelpSource/Classes/Atk.schelp

@@ -0,0 +1,51 @@
+CLASS:: Atk
+summary:: a class that stores some global variables for the Ambisonic Toolkit
+categories:: Libraries>Ambisonic Toolkit>Internals
+related:: Guides/Intro-to-the-ATK
+
+DESCRIPTION::
+The Atk class defines variables that may be used by the rest of the ATK library, including resources for kernel encoding and decoding and sample soundfile paths.
+
+
+CLASSMETHODS::
+
+METHOD:: userSupportDir_
+set the user support dir where ATK resources are located
+
+argument:: userSupportDirIn
+the path to the ATK folder containing your ATK support files
+
+METHOD:: userSupportDir
+
+returns::the path to the ATK support dir. Defaults to:
+code::Platform.userAppSupportDir.dirname ++ "/ATK";::
+
+METHOD:: userSoundsDir
+
+returns:: a path to the 'sounds' dir inside the ATK support dir
+
+METHOD:: userKernelDir
+
+returns:: a path to the 'kernel' dir inside the ATK support dir
+
+METHOD:: systemSupportDir
+
+returns::the path to the ATK support dir. Defaults to:
+code::Platform.systemAppSupportDir.dirname ++ "/ATK";::
+
+METHOD:: systemSoundsDir
+
+returns:: a path to the 'sounds' dir inside the ATK system support dir
+
+METHOD:: systemKernelDir
+
+returns:: a path to the 'kernel' dir inside the ATK system support dir
+
+METHOD:: openUserSupportDir
+runs a unixCmd to open the userAppSupport dir. Uses 'open' (OS X only)
+
+METHOD:: createUserSupportDir
+runs a unix cmd to create the user support dir for ATK
+
+METHOD:: openSystemSupportDir
+runs a unixCmd to open the systemAppSupport dir. Uses 'open' (OS X only)