docs: Add docs folder with guides from developers.google.com
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+# Logging
+
+This page provides logging tips to help you debug your applications.
+
+## Log Level
+
+You can enable logging of key events in this library by configuring Python's standard [logging](http://docs.python.org/library/logging.html) module. You can set the logging level to one of the following:
+
+- CRITICAL (least amount of logging)
+- ERROR
+- WARNING
+- INFO
+- DEBUG (most amount of logging)
+
+In the following code, the logging level is set to `INFO`, and the Google Translate API is called:
+
+```py
+import logging
+from apiclient.discovery import build
+
+logger = logging.getLogger()
+logger.setLevel(logging.INFO)
+
+def main():
+ service = build('translate', 'v2', developerKey='your_api_key')
+ print service.translations().list(
+ source='en',
+ target='fr',
+ q=['flower', 'car']
+ ).execute()
+
+if __name__ == '__main__':
+ main()
+```
+
+The output of this code should print basic logging info:
+
+```
+INFO:root:URL being requested: https://www.googleapis.com/discovery/v1/apis/translate/v2/rest
+INFO:root:URL being requested: https://www.googleapis.com/language/translate/v2?q=flower&q=car&source=en&alt=json&target=fr&key=your_api_key
+{u'translations': [{u'translatedText': u'fleur'}, {u'translatedText': u'voiture'}]}
+```
+
+## HTTP Traffic
+
+For even more detailed logging you can set the debug level of the [httplib2](https://github.com/httplib2/httplib2) module used by this library. The following code snippet enables logging of all HTTP request and response headers and bodies:
+
+```py
+import httplib2
+httplib2.debuglevel = 4
+```
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