Translation price guide added

To help those interested in contracting translations via the French Linguistics translation service, a translation price guide has now been added. It should be noted that the prices given are to serve purely as a guide, and that (as mentioned in the document) each text is priced individually, depending on the particular nature of that text, the purpose of the translation etc.

I am also currently working on some other material to aid those looking to contract this and other translation services, including information on the process involved as well as a guide as to when and when not to use machine translation (with a look at some of the specific and most dangerous types of translation error that can occur when using machine translation).