Complete the build requirements and the example in the README.md file.

README.md

@@ -7,9 +7,9 @@ Aka Yer Bacon,
 
 - #### A language that transpiles into lua, javascript or python code.
 
-Here's how the basic "hello world" script will look like.
+Here's how a "hello world" lambda will look like (`#=>` can be used as a shorthand for `#= ->`)
 ```
-main #= [] -> {
+main #=> {
   println "Hello, World!"
 }
 ```
@@ -24,13 +24,15 @@ Variables assigned using #= can't be changed (they are "final"), while the ones
 
 ## Build requirements
 
+CMake 3.18 or higher is needed.
+
 ### Linux target
 
-- GCC 10+ or Clang 11+
+- GCC 10+ or Clang 11+ with llvm-gold
 
 ### Windows target
 
  - MinGW32
- - The required packages for threading support (e.g: mingw-std-threads)
+ - The required packages for threading support (`gcc-mingw-w64-i686-posix-runtime` on debian)
 
 MSVC could also be used instead if you are on Windows.