Completed core code for stickies and updated README

I used a different code editor for the stickies (so that I could compile all the graphics into a single HTML file) and I couldn’t figure out how to add Hackatime to it. Hopefully it’ll be fine..?

I also updated the README with, well, more detailed instructions. The README is still a little vague, so I should add to it later.

Next I’ll be adding to the other empty spaces of the newtab page. I’m planning for a calculator and a list of saved shorctuts for web addresses, but most of the time, this is what happens when I plan my coding:

1. I plan things
2. I plan some more
3. I don’t follow my plans

Can’t think of anything else for this devlog. Back to coding!