translate README into Japanese

[thmatuza]

1. Create a folder (/japanese) to store Japanese files.
2. Translate README.md into Japanese and save it to /japanese/README-ja.md.

[leandromoreira]

Thank you very much @thmatuza

[matteocontrini]

@leandromoreira seeing that the "readme" is already translated in two languages, I think I'm available to create an Italian version as well. Would that be ok? :)

[leandromoreira]

@matteocontrini sure thing ;) that'd be awesome !!!

[thmatuza]

@leandromoreira Thank you for creating this awesome project! It really helped me to dig into digital video. I hope more Japanese will have same experience as me!

[leandromoreira]

@thmatuza thank you too for bringing this for the Japanese people. (Japan is the place I dream to visit from a long time aog, maybe the next olympic games I pay a visit there)