Nice to see the PSVita get new releases, heres the release notes:
Recently, there been alot of talk about using the 'Unity' game development engine, and now developers @SilicaAndPina have put together some handy UnityTools to make it easier to get your games up and running on your hacked/modded PlayStation Vita.
Arguments:
-i Input DIR
-o output DIR
-f Fix the "Unsafe homebrew" bug (that prevents the game from launching if unsafe homebrew is enabled)
-u Remove the "trial version" watermark caused by development license in the bottom right corner
-r Remove unused files from your build
-p Pack to "PC HOSTED" builds to .VPK
-d Remove input directory after packing into .vpk
Also, after building a "PC HOSTED" application with UNITY. you can just drag n drop the folder onto the application and it will run: -f -u -r -p -d on it.