DOCSP-16447 localhost connection (#189)

* added localhost information

Author: kyuan-mongodb

source/fundamentals/connection.txt

@@ -59,6 +59,11 @@ connect to MongoDB.
 .. literalinclude:: /code-snippets/connection/srv.js
    :language: javascript
 
+Connect to ``localhost``
+++++++++++++++++++++++++
+
+.. include:: /includes/localhost-connection.rst
+
 ------------------------
 Connect to a Replica Set
 ------------------------

source/includes/localhost-connection.rst

@@ -0,0 +1,8 @@
+To connect to a ``mongod`` running locally, change the connection string
+to ``"mongodb://localhost:<port>"``, e.g. ``"mongodb://locahost:27017"``.
+
+Your ``mongod`` instance must be running to successfully connect to your
+database. For information on how to start your ``mongod`` instance,
+see the :manual:`Manage mongod Processes
+</tutorial/manage-mongodb-processes/#start-mongod-processes>` Server
+Manual Entry.

source/quick-start.txt

@@ -212,6 +212,11 @@ After completing this step, you should have a working application that uses
 the Node.js driver to connect to your MongoDB instance, run a query on the
 sample data, and prints out the result.
 
+Connect to ``localhost``
+------------------------
+
+.. include:: /includes/localhost-connection.rst
+
 Next Steps
 ----------