title: Can not find header and source files when i create a new project in Qt creater
body: <p>I am new to Qt. I installed Qt 5 but when i create a new project (Qt widget application) i do not find headers and source files like <code>main.cpp</code> and <code>mainwindow.ui</code> and <code>mainwindow.cpp</code> Although *.pro file is there but nothing else.
  <code>mainwindow.cpp</code> does appear on the text editor but there is a message above that </p>
  
  <blockquote>
    <p>"This file is not the part of any project."</p>
  </blockquote>
  
  <p>When i checked inside the project directory i can see all the files present but in Qt creator i can not access any of them.<br>
  Please help.</p>