Update README.md: add photos and fix features

README.md

@@ -1,19 +1,23 @@
 # Ping Meter Gadget
 
-It's a customizable and small ping (latency) meter, written in C# using WPF.
+It's a customizable and small ping (latency) meter, written in C# using Visual Studio 2015 and WPF.
+![Configuration](https://raw.githubusercontent.com/pzmarzly/PingMeterGadget/images/screenshot1.png)
+![Multiple instances](https://raw.githubusercontent.com/pzmarzly/PingMeterGadget/images/screenshot2.png)
 
 ## Features
 
-- small, transparent (customizable opacity), always-on-top window
+- customizable:
+  - always on top
+  - window transparency
 - running in multiple instances
 - configuration autosaving
 - selecting host by hostname or IP
-- some nice configuration options
+- configuration tool
 
 ## License
 
 Licensed under MIT license. Feel free to fork, contribute and reuse code.
 
 ## Downloading
 
-[.NET Framework 4.5.2](https://www.microsoft.com/en-us/download/details.aspx?id=42642) is required. Download this application from repository releases.
+[.NET Framework 4.5.2](https://www.microsoft.com/en-us/download/details.aspx?id=42642) is required. Download this application from repository releases.