[nostalgia] Cleanup README and add prerequisites

README.md

@@ -1,12 +1,13 @@
 # Nostalgia
 
-## Setup
+## Prerequisites
 
-### Linux
+	* Install GCC, Clang, or Visual Studio with C++17 support (including std::filesystem)
+	* Install Make and CMake
+	* Install Conan
+	* Consider also install in Ninja build and ccache for faster build times
 
-Make sure conan is using the C++11 version of libstdc++.
-
-	conan profile update settings.compiler.libcxx=libstdc++11 default
+## Platform Specific Setup
 
 ### macOS
 
@@ -14,7 +15,7 @@ Install and use gmake instead of the make that comes with the system.
 
 ## Build
 
-Build options: release, debug, gba, gba-debug
+Build options: release, debug, asan, gba, gba-debug
 
 	make setup-conan
 	make purge conan configure-{gba,release,debug} install