modify cfr_test to cfr_module

+var client_id = 'v3M4wjolGLkrvNA3GUIW';
+var client_secret = 'fKF6vjkWhE';
+var fs = require('fs');
+var request = require('request');
+
+exports.imgtodata=function(dir){
+   var api_url = 'https://openapi.naver.com/v1/vision/face'; // 얼굴 감지
+
+   var _formData = {
+     image:'image',
+     image: fs.createReadStream(__dirname + dir) // FILE 이름
+   };
+
+    request.post(
+      { url:api_url, 
+        formData:_formData,
+        headers: {'X-Naver-Client-Id':client_id,
+                 'X-Naver-Client-Secret': client_secret}
+      }, (err,response,body) =>{
+       console.log(response.statusCode); // 200
+       //console.log(response.headers['content-type'])
+
+       data=JSON.parse(body);
+       gender=data.faces[0].gender.value;
+       emotion=data.faces[0].emotion.value
+
+       console.log(gender);
+       console.log(emotion);
+
+       return {gender:gender,emotion:emotion};
+    });
+  }
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