Updated README.md to include the installer and updated/expanded the D…

…evelopment-section

README.md

@@ -13,6 +13,28 @@ It's a great way to monitor a connection or host and gives feedback in an intuit
 **Interval:** This is the ping interval in ms (milliseconds)  
 **Display:** This is the amount of pings to display in the graph
 
-## Building
+# Development
+This section is focussed on development of NetPing, in case you want to build your own version(s).
+
+## Environment
 This application was written using Visual Studio 2015 and .NET Framework 4.5.2 on Windows 10 1511.  
-It will most likely work fine on different configurations, but might require some modifications.
+It will most likely build fine on different configurations, but might require some modifications.
+
+## Updating the version number
+The version number is stored in two locations:
+* In the projects assembly info file: **'NetPing\Properties\AssemblyInfo.cs'**
+* In the installer setup.iss file (only used for the installer): **'Installer\setup.iss'**
+
+## Building the installer
+> Note: *This installer uses 3rd party components from [innodependencyinstaller](https://github.com/stfx/innodependencyinstaller) to automatically download and install the correct .NET framework if required. See* ***'Installer\innodependencyinstaller LICENSE.md'*** *for the license of innodependencyinstaller.*
+
+NetPing uses the [Inno Setup Compiler](http://www.jrsoftware.org/isinfo.php) to generate an executable installer.  
+The installer project files are located in the **'Installer'**-folder.  
+
+The scripts are based on [Inno Setup 5.5.9](http://www.jrsoftware.org/isinfo.php) but will probably work with any recent version.
+
+To build the installer:
+* Make sure the project is compiled and there is a working executable named **'NetPing.exe'** in the **'NetPing\bin\Release'**-folder 
+* Open **'Installer\setup.iss'** in the [Inno Setup Compiler](http://www.jrsoftware.org/isinfo.php) 
+* Hit *Build* -> *Compile* (Ctrl+F9)
+* Done, the installer should be in the **'Installer\bin'**-folder