Force removal of temporary WAV files. Fixes #2

It turned out that flac.exe propagates the readonly attribute
to the output file. Fortunately, FileSystemObject.DeleteFile()
has an optinal argument 'force' that overrides that attribute.

Version changed to 0.92.

AddFLACs.js

@@ -1,7 +1,7 @@
 //
 // AddFLACs.js - add FLAC audio files to iTunes media library
 //
-// Version: 0.91
+// Version: 0.92
 //
 // Refer to the file COPYING.MIT for licensing conditions.
 //
@@ -271,8 +271,10 @@ function Traverse(folder) {
                 if (fso.FileExists(tempTrackPath))
                     fso.DeleteFile(tempTrackPath)
             }
+            // #2: it turned out that flac.exe preserves the readonly attribute,
+            // so it is necessary to force removal
             log("Deleting temporary WAV file")
-            fso.DeleteFile(tempWAVPath)
+            fso.DeleteFile(tempWAVPath, true)
         }
     }
     var subfolders = new Enumerator(folder.SubFolders)

build.bat

@@ -5,5 +5,5 @@ call src\utf8to16\build.bat
 "C:\Program Files (x86)\Pandoc\bin\pandoc.exe" -s --html5 -o dist\README.html README.md
 for %%i in (AddFLACs.bat AddFLACs.js COPYING.MIT COPYING.GPL bin\flac.exe bin\metaflac.exe) do copy %%i dist
 cd dist
-if exist ..\AddFLACs-0.91.zip del ..\AddFLACs-0.91.zip
-zip ..\AddFLACs-0.91.zip *
+if exist ..\AddFLACs-0.92.zip del ..\AddFLACs-0.92.zip
+zip ..\AddFLACs-0.92.zip *