As there seemed to be some interest in my self made tech tree template, I've decided to share it with the community.
After I had gone through some frustrating tech tree developments, I decided to map the tech tree once and for all, to make it easier for my future projects. I took the original tech tree and split it into different brances, and named them according to their respective branch. The next scenario I made with my new template, I just renamed the various tech brances to fit the new theme. It has saved me alot of work and I hope others can benefit from it as well.
NB! Although this is a nice starting point, the tech tree is not absolutely complete, and not very sophisticated as it is. There's still some work that needs to be done. Especially for the modern techs. So, don't get disappointed when you see that there's still some work to be done. But it has surely saved me of many hours of work.
This guide written by Kobayashi is also a great asset to be used during your tech tree development: http://www.civfanatics.com/civ2/reference/customtree/