title: PyDrive: Invalid client secrets file
body: <p>I am trying to use PyDrive to get a list of all files in my Google Drive. I have read through the docs and completed all steps. I have client secrets.json saved down, but I continue to get the following error. The code I am using is:</p>
  
  <pre><code>from pydrive.auth import GoogleAuth
  from pydrive.drive import GoogleDrive
  
  gauth = GoogleAuth()
  gauth.LocalWebserverAuth()
  # Creates local webserver and auto handles authentication
  
  drive = GoogleDrive(gauth)
  
  
  file_list = drive.ListFile({'q': "'root' in parents and trashed=false"}).GetList()
  for file1 in file_list:
      print 'title: %s, id: %s' % (file1['title'], file1['id'])
  </code></pre>
  
  <p>The error I am getting is, how to do I fix this?</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\mydrive\Documents\Python\Google_Drive.py", line 5, in &lt;module&gt;
      gauth.LocalWebserverAuth()
    File "build\bdist.win-amd64\egg\pydrive\auth.py", line 67, in _decorated
      self.GetFlow()
    File "build\bdist.win-amd64\egg\pydrive\auth.py", line 345, in GetFlow
      self.LoadClientConfig()
    File "build\bdist.win-amd64\egg\pydrive\auth.py", line 294, in LoadClientConfig
      self.LoadClientConfigFile()
    File "build\bdist.win-amd64\egg\pydrive\auth.py", line 314, in LoadClientConfigFile
      raise InvalidConfigError('Invalid client secrets file %s' % error)
  InvalidConfigError: Invalid client secrets file File not found: "client_secrets.json"
  </code></pre>