upd import example, keywords list

docs/readme.md

@@ -298,7 +298,8 @@ void _start(){  }
 
 ```
 // wasm import from js
-void print = int a
+void = int a
+print
 
 ->
 
@@ -411,6 +412,10 @@ ptns
 
 *_sw (function name end)
 
+main
+smain
+wmain
+
 dlang (dlang code without changes)
 ```
 todo