Merge pull request #11 from tstringer/master

Added MongoDB information

Author: Jason Yang

README.md

@@ -280,11 +280,48 @@ Sometimes, when deploying a native module to production, oftentimes it is not po
 
 ## Application-specific tips and tricks
 > :triangular_flag_on_post: **TODO**
-* Setting up MongoDB.
 * Setting up SQL.
 * .NET in-process using Edge.js.
 * [node-windows](https://github.com/coreybutler/node-windows): Windows services, logging, and commands using Node.js.
 
+### Setting up and working with MongoDB
+
+1. [Install MongoDB on Windows](https://docs.mongodb.org/manual/tutorial/install-mongodb-on-windows/)
+2. Install the MongoDB npm package in the project root by running `npm install mongodb`
+3. *(Optional, but helpful for IntelliSense support in Visual Studio Code)* Install the type definition file for MongoDB with `tsd install mongodb`
+4. Load the mongodb module: `var MongoClient = require('mongodb').MongoClient;`
+5. [Determine your MongoDB connection string URI](https://docs.mongodb.org/manual/reference/connection-string/) and set it to a variable: `var mongoUrl = '...'`;
+ > Example: mongodb://localhost:27017/yourDatabaseName
+ 
+ > :bulb: MongoDB by default listens on 27017, but to verify this open the MongoDB log file `mongod.log` in the log directory and navigate the line that shows the port number (i.e. `[initandlisten] waiting for connections on port 27017`)
+6. Access your MongoDB database by calling `MongoClient.connect()` and query the returned database
+```javascript
+MongoClient.connect(mongoUrl, function (err, db) {
+    if (!err) {
+        // query the collection and return a cursor to use 
+        // to access the data
+        //
+        // note: calling find() with no parameters is the equivalent 
+        // of pulling all documents in the collection with no 
+        // predicate
+        var cursor = db.collection('yourCollectionName').find();
+        
+        // loop through all of the documents returned by the 
+        // query
+        cursor.each(function (err, element) {
+            if (!err && element) {
+                // do something with the document
+            }
+            // if error and the document are undefined then 
+            // we have reached the no-more-documents condition
+            if (!err && !element) {
+                console.log('done!');
+            }
+        });
+    }
+});
+```
+
 ## Node.js + Microsoft products, services, and contributions
 * [**Visual Studio Code**](https://code.visualstudio.com/): Lightweight cross-platform editor for building and debugging modern web and cloud applications.
 * [**Node.js Tools for Visual Studio**](https://www.visualstudio.com/features/node-js-vs): Free, open-source extension that turns Visual Studio into a powerful Node.js development environment.