message: fix android issue
diff: @@ -38,7 +38,7 @@ class MainActivity : AppCompatActivity() {
  renderer.setOnClickListener {
  containerView.removeAllViews()
  val json = codeEditText.text.toString()
  - val ast = ASTProcessor().evaluate(json)
  + val ast = ASTProcessor.evaluate(json)
  Log.d("AST", ast.toString())
  }
  