updating readme with install/run instructions

[zenwattage]

Adding install and run command instructions.

Closes Issue#130

[1jc]

1jc reviewed documentation for npm install & run instructions Feb 17 7:21pm

[kdpcapstone]

Hey Scott, Maybe you could add a few more comments to it, like cloning the main repository from github, make sure to git checkout -b branchname so changes aren't accidentally made to main, and npm install axios, and press ctrl-c to stop npm?

[zenwattage]

You only need to install axios manually as of now as it's not in the package.json in the project. That won't be the case once this is finished and will be installed with the rest of the dependencies during npm install. But I'll add basic stop/start instructions no problemo