Web real time data viewer

This is a simple test using SmoothieCharts

 * http://smoothiecharts.org/
requeriments updated
First approach to real-time data viewer using SSE
obd2 command-line utility

Only one file with all the modes known at the moment:

 - Collect Data (with --server option)
 - Info (incomplete)
 - Expert Mode
 - Generate Graphs
requeriments updated
Merge pull request #4 from humitos/cli-app

Cli app