add json_object pkg
rename script directory
dart really likes having a web directory
there's a couple of ways to set text now.

not sure which i like more. seems as if using the query selector
directly makes the intent of the code less clear. however, I wonder if
textInject really makes any sense as a wrapper. it is more concise, but
requires weird string handling, which tripped me up at first
add a few pieces of flair