Update README.md

Author: exsycore

README.md

@@ -1 +1,13 @@
-"# qr-gen-cpp" 
+# QR-Code generator with C++
+(Project made by newbie)
+This is the basic way to create QR-Code using cpp-httplib, libpng, zlib. Thank you very much. Without them, my project would not have happened.
+
+# Build
+```bash
+git clone --recursive https://github.com/exsycore/qr-gen-cpp.git
+cd qr-gen-cpp
+mkdir build
+cd build
+cmake .. -G "Visual Studio 17 2022"
+cmake --build . --config Release or Debug
+```