updated readme for releases.

README.md

@@ -5,6 +5,29 @@ an [Electron](https://electron.atom.io) app which
 utilizes [Plotly.js](https://plot.ly) and regular expressions to parse the
 *Component Logs* generated by ROSMOD components.
 
+ROSMOD Plotter enables plotting logs directly from files recovered or
+downloaded without needing to run the ROSMOD WebGME server.
+
+To use ROSMOD Plotter navigate to
+[Releases](https://github.com/rosmod/plotter/releases) and download
+the latest release for your platform.
+
+Usage:
+1. Download and extract the zip according to the platform you're running
+2. Go into the extracted folder and execute `ROSMOD Plotter`.
+3. *Right Click* and select `Open Log`
+4. Navigate to the log file you want to load.
+5. Enjoy the plot (and repeat steps 3 and 4 for as many logs as you want to plot.
+
+Controls:
+* Hover over plot: shows closest point on closest plot
+* Click + drag inside plot to zoom
+* Double Click inside plot to reset zoom
+* Click on legend item to hide it
+* Double click on legend item to toggle showing only it and the previous selection
+* Click on the title to toggle hiding the plot altogether
+* Click on the camera icon (shown when hovering over the upper right corner of a plot) to download a png of the plot as it is shown in the app (size and current selections etc.).
+
 ## Installation
 
 ```bash