[docs] Add installation guide for windows os (#174)

docs/development/environment-setup/windows.md

@@ -0,0 +1,104 @@
+---
+path: '/docs/installation-guide-windows'
+title: 'Windows 10 Installation Guide'
+---
+
+### Requirements
+
+You need to install Linux Subsystem for Windows.
+
+1. The first step is to enable "Developer mode" in Windows. You can do this by opening up Settings and navigating to to Update & Security, then "For Developers". Click the "Developer mode" option to enable it.
+
+<img src="./img/developer-mode.jpg" width="500" alt="Enable Developer Mode" style="display: block; margin-left: auto; margin-right: auto;">
+
+2. Enable Windows Subsystem for Linux by opening Control Panel, going to Programs, and then clicking "Turn Windows Features On or Off". Looking for the "Windows Subsystem for Linux" option and check the box next to it.
+
+<img src="./img/enable-wsl.jpg" width="500" alt="Enable WSL" style="display: block; margin-left: auto; margin-right: auto;">
+
+3. Once that's complete, you can open up the Start menu again and search for "Bash". This time it will have the Ubuntu logo.
+
+### Installing RVM & Ruby
+
+You need core linux dependencies installed in order to install ruby.
+
+```bash
+sudo apt-get update
+sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev software-properties-common libffi-dev
+```
+
+Install RVM & ruby version 2.6.5
+
+```bash
+sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev
+gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 7D2BAF1CF37B13E2069D6956105BD0E739499BDB
+curl -sSL https://get.rvm.io | bash -s stable
+source ~/.rvm/scripts/rvm
+rvm install 2.6.5
+rvm use 2.6.5 --default
+ruby -v
+```
+
+### Install Node.js
+
+Install Node.js from NodeSoure using the following commands
+
+```bash
+curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash -
+sudo apt-get install -y nodejs
+```
+
+### Install yarn
+
+We use `yarn` as package manager
+
+```bash
+curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
+echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
+```
+
+```bash
+sudo apt-get update && sudo apt-get install yarn
+```
+
+### Install postgres
+
+The database used in Chatwoot is PostgreSQL. Use the following commands to install postgres.
+
+```bash
+sudo apt install postgresql postgresql-contrib
+```
+
+The installation procedure created a user account called postgres that is associated with the default Postgres role. In order to use Postgres, you can log into that account.
+
+```bash
+sudo -u postgres psql
+```
+
+Install `libpg-dev` dependencies for ubuntu
+
+```bash
+sudo apt-get install libpq-dev
+sudo service postgresql start
+```
+
+### Install redis-server
+
+Chatwoot uses Redis server in agent assignments and reporting. To install `redis-server`
+
+```bash
+sudo apt-get install redis-server
+```
+
+Enable Redis to start on system boot.
+
+```bash
+sudo systemctl enable redis-server.service
+```
+
+### Install imagemagick
+
+```bash
+sudo apt-get install imagemagick
+```
+
+Next: Read project setup to install project dependencies