message: Improved README showcasing each compiler
diff: @@ -58,11 +58,15 @@ Wasmer has the following configuration flags:
  *This feature is normally used only in development environments*
  * Compilers (mutually exclusive):
  - `singlepass`: it will use `wasmer-compiler-singlepass` as the default
  - compiler.
  + compiler (ideal for **blockchains**).
  - `cranelift`: it will use `wasmer-compiler-cranelift` as the default
  - compiler.
  + compiler (ideal for **development**).
  - `llvm`: it will use `wasmer-compiler-llvm` as the default
  - compiler.
  + compiler (ideal for **production**).
  +
  +Wasmer ships by default with the `cranelift` compiler as its great for development proposes.
  +However, we strongly encourage to use the `llvm` backend in production as it performs
  +about 50% faster, achieving near-native speeds.
  > Note: if you want to use multiple compilers at the same time, it's also possible!
  > You will need to import them directly via each of the compiler crates.
  