Update README.md

README.md

@@ -1,2 +1,28 @@
-# DeviceMonitoring
-Application to monitore the state of selected windows device (as example state of video card)
+## Device monitoring
+
+### Command line utility for monitoring the status of a selected Windows device.
+
+#### Arguments:
+
+ - **-f** - Output file, default *data[date time].csv* next to exe file
+ - **-d** - Interval between checks, default: 100 ms
+ - **-b** - File write size, default: 100 checks
+
+#### Output file content example:
+
+| Date | State (0 - working, 1 - disabled) |
+|--|--|
+| 2020-11-10T19:32:06.1315815 | 0 |
+| 2020-11-10T19:32:07.2940804 | 0 |
+| 2020-11-10T19:32:09.7547642 | 0 |
+| 2020-11-10T19:32:11.4857750 | 0 |
+| 2020-11-10T19:32:15.2491798 | 1 |
+| 2020-11-10T19:32:18.7115560 | 0 |
+| 2020-11-10T19:32:21.0036836 | 0 |
+| 2020-11-10T19:32:25.7533275 | 0 |
+
+#### An example of a chart built on the output file:
+[![enter image description here](https://raw.githubusercontent.com/verloka/DeviceMonitoring/master/merch/chart.png)](https://github.com/verloka/DeviceMonitoring)
+
+
+## .Net Core 3.1