Update Windows Installation

docs/installing/os/windows.md

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+Windows
+=========
+> This article supports windows 7 / 8.1 / 10 and windows server 2012/2016.Because the old version of the system may be a security risk, we do not recommend in less than these versions of the system in the following operations.
+
+Preparation
+-----------------
+
+First,We install `chocolatey`.(It's a good packages manager for Windows.)
+**Before installing, you should check:**
+* system : Windows 7+ / Windows Server 2003+
+* PowerShell v2+
+* .NET Framework 4+ (the installation will attempt to install .NET 4.0 if you do not have it installed)
+> If your Powershell version is less than 2, please [click here](https://www.microsoft.com/en-US/download/details.aspx?id=40855) to update your version.
+Running NodeBB
+
+Then,open an PowerShell window(administrative),run the scripts behind:
+```
+Set-ExecutionPolicy AllSigned; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
+```
+If you don't see any errors, you are ready to use Chocolatey! Type `choco` or `choco -?` now. 
+
+Installation
+--------------
+
+First,open a PowerShell window(administrative).Run the scripts behind to install **Required Softwares**:
+```
+#Use administrative shell
+choco install -y imagemagick git github python2 nodejs-lts
+choco install -y mongodb #use Mongodb as database?
+choco install -y redis-64 #use redis as database? 
+#if you use a x86 os,please use `cinst -y redis` instead. 
+choco install nginx #need use nginx as proxy?
+```
+> Depending on your needs, execute different scripts.
+If you do not see anything wrong, then we start configuring the database section.
+
+Configure your databases
+------------
+
+> **Sorry, I am here in the test to redis configured for windows service error, so I can only provide you with the guidance of Mongodb.**
+1. Find Mongodb bin directory, and then add it to the system environment variable path. (Maybe your mongodb will be here: `C:\Program Files\MongoDB\Server\3.4\bin`)
+
+2. Whether the test is effective: `mongo --version`
+3. Create two new folders in the Mongodb directory（e.g `C:\Program Files\MongoDB\Server\3.4\data` and `C:\Program Files\MongoDB\Server\3.4\logs`,）
+4. Type these in shell:
+```
+mongod --dbpath 'C:\Program Files\MongoDB\Server\3.4\data' --logpath 'C:\Program Files\MongoDB\Server\3.4\logs\mongodb.log' --install
+```
+5. Press `CTRL`+ `R` and type `services.msc`. Find Mongodb in the open window and start it
+6. Add a user for NodeBB.
+General MongoDB administration is done through the MongoDB Shell mongo. A default installation of MongoDB listens on port 27017 and is accessible locally. Access the shell:
+```
+#use PowerShell
+mongo
+```
+Switch to the built-in `admin` database:
+```
+> use admin
+```
+Create an administrative user (**not** the `nodebb` user). Replace the placeholders `<Enter a username>` and `<Enter a secure password>` with your own selected username and password. Be sure that the < and > are also not left behind.
+```
+> db.createUser( { user: "<Enter a username>", pwd: "<Enter a secure password>", roles: [ { role: "readWriteAnyDatabase", db: "admin" }, { role: "userAdminAnyDatabase", db: "admin" } ] } )
+```
+This user is scoped to the `admin` database to manage MongoDB once authorization has been enabled.
+
+To initially create a database that doesn't exist simply `use` it. Add a new database called `nodebb`:
+```
+> use nodebb
+```
+The database will be created and context switched to `nodebb`. Next create the nodebb user and add the appropriate privileges:
+```
+> db.createUser( { user: "nodebb", pwd: "<Enter a secure password>", roles: [ { role: "readWrite", db: "nodebb" }, { role: "clusterMonitor", db: "admin" } ] } )
+```
+The `readWrite` permission allows NodeBB to store and retrieve data from the `nodebb` database. The `clusterMonitor` permission provides NodeBB read-only access to query database server statistics which are then exposed in the NodeBB Administrative Control Panel (ACP).
+
+Exit the Mongo Shell:
+```
+> quit()
+```
+6. Let Mongodb enable authentication
+Press Ctrl + R and type regedit. After that, press Enter.
+
+Find `ImagePath` in `[HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet -> Services -> MongoDB]`, after its key value is added `--auth`.
+
+Press `CTRL`+ `R` and type `services.msc`.Restart your MongoDB.
+Verify the administrative user created earlier can connect:
+```
+mongo -u your_username -p your_password --authenticationDatabase=admin
+```
+If everything is configured correctly the Mongo Shell will connect. Exit the shell.
+
+Install NodeBB
+----------------
+
+Open Git Shell, and type the following commands. Clone NodeBB repo:
+
+```
+git clone -b v1.5.x https://github.com/NodeBB/NodeBB.git
+```
+
+Enter directory:
+
+```
+cd NodeBB
+```
+
+Install dependencies:
+
+```
+npm install
+```
+
+Run interactive installation:
+
+```
+node app.js --setup
+```
+
+You may leave all of the options as default.
+
+And you're done! After the installation, run
+
+```
+node app.js
+```
+
+and leave the window open.
+
+You can visit your forum at `http://127.0.0.1:4567/`
+
+Developing on Windows
+---------------------
+
+It's a bit of a pain to shutdown and restart NodeBB everytime you make
+changes. First install supervisor:
+
+```
+npm install -g supervisor
+```
+
+Open up bash:
+
+```
+bash
+```
+
+And run NodeBB on "watch" mode:
+
+```
+./nodebb watch
+```
+
+It will launch NodeBB in development mode, and watch files that change
+and automatically restart your forum.