users can now filter for a word, although this was done in a hacky way which filtered down the already filtered down twitter stream, so even common words like 'lol' would appead far less frequently than normal, best I can do for now. firebase data is not deleted every few seconds, I did this because I'll eventually hit my 100mb firebase data limit if I leave it as it was. also implementing US heat map, I've set up the variables, now need to set up logic