Added support for multiple languages

The release 1.0.1 update added support for languages other than English, so far I have support for German, Russian, Chinese, French, Japanese, Korean, and Spanish. Please note that I can't claim to speak any of these languages, I've relied heavily on Google translate to provide the translations, which as I discovered isn't as straight forward as one might think. Simple English words like "Play" and "Volume" have multiple different meanings and if you're not careful you can easily pick the wrong translated value, especially when other languages have many slightly different variations. Please let me know if I've messed up and translated something wrong, or if you would like me to add support for another language.

If anyone's interested I ended up using the Simple Localization asset by Hippo. I can't really say why I went with this one other than it was free, it had good reviews, and it didn't seem overly complicated. I ended up making a few modifications and removing some features such as the Google Sheets integration as I didn't need them. I did have one last minute bug that I've yet to solve, it seems that out of the box Unity's WebGL fonts only support languages that rely on the Latin character set which rules out Russian and most of the Asian languages. It doesn't seem like a huge hurdle but it'll have to wait for now.