Add documentation on logging and add classifiers to setup.py

Author: joowani

docs/index.rst

@@ -70,4 +70,5 @@ Contents
     task
     wal
     errors
+    logging
     classes

docs/logging.rst

@@ -0,0 +1,68 @@
+.. _logging-page:
+
+Logging
+-------
+
+By default, :class:`arango.ArangoClient` logs API call history using the
+``arango`` logger at ``logging.DEBUG`` level.
+
+Here is an example showing how the logger can be enabled and customized:
+
+.. code-block:: python
+
+    import logging
+
+    from arango import ArangoClient
+
+    logger = logging.getLogger('arango')
+
+    # Set the logging level
+    logger.setLevel(logging.DEBUG)
+
+    # Attach a custom handler
+    handler = logging.StreamHandler()
+    formatter = logging.Formatter('[%(levelname)s] %(message)s')
+    handler.setFormatter(formatter)
+    logger.addHandler(handler)
+
+    # Initialize and use the client to see the changes
+    client = ArangoClient(
+        username='root',
+        password='',
+        enable_logging=True
+    )
+    client.databases()
+    client.endpoints()
+    client.log_levels()
+
+
+The logging output for above would look something like this:
+
+.. code-block:: bash
+
+    [DEBUG] GET http://127.0.0.1:8529/_db/_system/_api/database 200
+    [DEBUG] GET http://127.0.0.1:8529/_db/_system/_api/endpoint 200
+    [DEBUG] GET http://127.0.0.1:8529/_db/_system/_admin/log/level 200
+
+
+In order to see the full request information, turn on logging for the requests_
+library which **python-arango** uses under the hood:
+
+.. _requests: https://github.com/kennethreitz/requests
+
+.. code-block:: python
+
+    import requests
+    import logging
+
+    try: # for Python 3
+        from http.client import HTTPConnection
+    except ImportError:
+        from httplib import HTTPConnection
+    HTTPConnection.debuglevel = 1
+
+    logging.basicConfig()
+    logging.getLogger().setLevel(logging.DEBUG)
+    requests_log = logging.getLogger("requests.packages.urllib3")
+    requests_log.setLevel(logging.DEBUG)
+    requests_log.propagate = True

setup.py

@@ -13,5 +13,19 @@
     url='https://github.com/joowani/python-arango',
     packages=find_packages(),
     include_package_data=True,
-    install_requires=['requests', 'six']
+    install_requires=['requests', 'six'],
+    classifiers=[
+        'Intended Audience :: Developers',
+        'Intended Audience :: End Users/Desktop',
+        'Intended Audience :: Information Technology',
+        'License :: OSI Approved :: MIT License',
+        'Operating System :: MacOS',
+        'Operating System :: Microsoft :: Windows',
+        'Operating System :: POSIX',
+        'Operating System :: Unix',
+        'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 3',
+        'Topic :: Documentation :: Sphinx'
+    ]
 )