Rename the project to SketchCanvas
Rename the project to SketchCanvas

We started off with the concept of "Punch drawings" (ポンチ絵) in Japanese,
but it turned out that it's not common concept in English.
We pick SketchCanvas as the new name of the project to make it easy to
imagine the concept for average people.

msakuta/SketchCanvas,msakuta/SketchCanvas,msakuta/SketchCanvas