Added docs for query builder

Author: RogerSelwyn

docs/source/usage/utils/query.rst

@@ -1,7 +1,53 @@
 Query
 =====
 
+.. _query_builder:
+
 Query Builder
 -------------
 
+A query can be created for every ``ApiComponent`` (such as ``MailBox``). The ``Query`` can be used to handle the filtering, sorting, selecting, expanding and search very easily.
+
+For example:
+
+.. code-block:: python
+
+    from O365.utils import ExperimentalQuery
+    builder = ExperimentalQuery(protocol=account.protocol)
+
+    query = builder.chain_or(builder.contains('subject', 'george best'), builder.startswith('subject', 'quotes')
+
+    # 'created_date_time' will automatically be converted to the protocol casing.
+    # For example when using MS Graph this will become 'createdDateTime'.
+
+    query = query & builder.greater('created_date_time', datetime(2018, 3, 21))
+
+    print(query)
+
+    # contains(subject, 'george best') or startswith(subject, 'quotes') and createdDateTime gt '2018-03-21T00:00:00Z'
+    # note you can pass naive datetimes and those will be converted to you local timezone and then send to the api as UTC in iso8601 format
+
+    # To use Query objetcs just pass it to the query parameter:
+    filtered_messages = mailbox.get_messages(query=query)
+
+You can also specify specific data to be retrieved with "select":
+
+.. code-block:: python
+
+    # select only some properties for the retrieved messages:
+    query = builder.select('subject', 'to_recipients', 'created_date_time)
+
+    messages_with_selected_properties = mailbox.get_messages(query=query)
+
+You can also search content. As said in the graph docs:
+
+    You can currently search only message and person collections. A $search request returns up to 250 results. You cannot use $filter or $orderby in a search request.
+    
+    If you do a search on messages and specify only a value without specific message properties, the search is carried out on the default search properties of from, subject, and body.
+
+    .. code-block:: python
+
+        # searching is the easy part ;)
+        query = builder.search('george best is da boss')
+        messages = mailbox.get_messages(query=query)
 

docs/source/usage/utils/utils.rst

@@ -39,6 +39,10 @@ For example:
 
 Query helper
 ------------
+.. note::
+
+    This method of creating queries is now deprecated, queries shoould now be created using the ExperimentalQuery methods - :ref:`query_builder`
+
 Every ``ApiComponent`` (such as ``MailBox``) implements a new_query method that will return a ``Query`` instance. This ``Query`` instance can handle the filtering, sorting, selecting, expanding and search very easily.
 
 For example: