Major refactoring

cliverse.js

 var cli = {
   nodeShellExec
   , get prompt() {
-    const clii = readline.createInterface({
-      input: process.stdin,
-      output: process.stdout
-    });
-    // clii.on("close", function() { });
+    const clii = readline.createInterface({ input: process.stdin, output: process.stdout });
+    clii.ask = function(q){
+      return new Promise((resolve, reject)=>{
+        clii.question(q, (answer)=>{ resolve(answer) })
+      })
+    } 
     return clii
   }
 }