Updated README with steps to build Alfis.

README.md

@@ -2,3 +2,31 @@
 Alternative Free Identity System
 
 This project represents a minimal blockchain with no coin, capable of sustaining any number of domain name zones and domains.
+
+
+## Building
+
+### On every OS
+You can build Alfis by issuing `cargo build` and `cargo run` commands in a directory of cloned repository.
+If you want to build release version you need to do `cargo build --release` as usual.
+
+### On Windows
+You don't need any additional steps to build Alfis, just stick to the MSVC version of Rust.
+
+### On Windows (MINGW64)
+If you'd rather use Gnu version of Rust you can build Alfis by these steps:
+```
+pacman -S git
+pacman -Ss rust
+pacman -S mingw64/mingw-w64-x86_64-rust
+pacman -Ss cargo
+pacman -S mingw64/mingw-w64-x86_64-cargo-c
+git clone https://github.com/Revertron/Alfis.git
+cd Alfis
+cargo build
+cargo run
+```
+
+### On Linux
+If you are building on Linux you must ensure that you have `libwebkitgtk` library installed.
+You can do it by issuing this command: `sudo apt install libwebkit2gtk-4.0-dev` (on Debian/Ubuntu and derivatives).