gpp.rake in revealing-1.0.2

- old
+ new

@@ -1,4 +1,4 @@
-desc "Sources are pre-processed into #{TARGET_DIR}"
-file "#{GPP_DIR}/index.markdown" => [GPP_DIR, DIRTY_FILE] + FileList["#{SOURCE_DIR}/**/*.markdown"] do |target|
+desc "Sources are pre-processed into the single #{GPP_FILE}"
+file GPP_FILE => [GPP_DIR, DIRTY_FILE] + SOURCE_FILES do |target|
   sh %(gpp -I src -x -o #{target} #{SOURCE_DIR}/index.markdown)
 end