Now create a 2d sprite animation clips from a sprite sheet - very easy, of course, if you create a sprite sheet in the ShoeBox program.
After the import into Unity sprite sheet and xml, you can see and customize the creation of each clip, its name, speed, position of the pivot, and so on. Of course you can do all of these settings manually without the use of this Asset, this little addition simply saves you time.
To download the ShoeBox program please click here: http://renderhjs.net/shoebox/