added a google analytics library

installed via:
npm intall ga
code at https://github.com/jgallen23/node-ga
moved package.json into node project folder

node project folder is different from git project folder.
node project folder is the folder called ‘riob-us’ inside the git
project folder.
fixed configuration file name
code now reads url parameters from requests

the requests actually look like:
localhost:port?s=1&linha=696&rand=527655
where ’s’ is the platform where the request has been sent from, ‘linha’
is the bus line string and ‘rand’ is a random number that is used to
make the url different than the previous one.

- so now, the code is actually checking and looking for theses
parameters.
- the send.json call is now the same for both routs.
- added a commented snippet with a sample usage of google analytics.
- moved the child.on(‘message’) code upwards.