Add window installations

[cesswairimu]

Hi, this is a first-timers-only issue. This means we've worked to make it more legible to folks who either haven't contributed to our codebase before, or even folks who haven't contributed to open source before.

If that's you, we're interested in helping you take the first step and can answer questions and help you out as you do. Note that we're especially interested in contributions from people from groups underrepresented in free and open source software!

We know that the process of creating a pull request is the biggest barrier for new contributors. This issue is for you 💝

If you have contributed before, consider leaving this one for someone new, and looking through our general help wanted issues. Thanks!

🤔 What you will need to know.

Nothing. This issue is meant to welcome you to Open Source :) We are happy to walk you through the process.

📋 Step by Step

• 🙋 Claim this issue: Comment below. If someone else has claimed it, ask if they've opened a pull request already and if they're stuck -- maybe you can help them solve a problem or move it along!

• 📝 Update the file https://github.com/publiclab/mapknitter/blob/maincd ../README.md (press the little pen Icon) and edit the line as shown below.

1. Below this line add - [Standard Installation](#standard-installation) add - [Windows Installation](#windows-installation)
2. Bellow this line
   10. Open the Codenvy URL provided in the console to see MapKnitter booted up. Great work! . add this block of code

<hr>

### Windows Installation
We recommend you either work in a virtual environment, or on a dual booted system to avoid dependencies issues and also Unix system works smoother with Ruby and Rails. This will not only benefit you now for mapknitter, but in future working on other Ruby projects
on as they will get into development further, a linux or mac based OS would be better. 
1. [Dual Booting](https://www.tecmint.com/install-ubuntu-alongside-with-windows-dual-boot/amp/), [option2](https://askubuntu.com/questions/1031993/how-to-install-ubuntu-18-04-alongside-windows-10), [video guide](https://www.youtube.com/watch?v=qNeJvujdB-0&fbclid=IwAR0APhs89jlNR_ENKbSwrp6TI6P-wxlx-a0My9XBvPNAfwtADZaAXqcKtP4)
2. [Setting up a linux virtual env](https://itsfoss.com/install-linux-in-virtualbox/)

See this page for some help in taking your first steps!

Below is a "diff" showing in red (and a -) which lines to remove, and in green (and a +) which lines to add:

$DIFF

• 💾 Commit your changes

• 🔀 Start a Pull Request. There are two ways how you can start a pull request:

1. If you are familiar with the terminal or would like to learn it, here is a great tutorial on how to send a pull request using the terminal.

2. You can also edit files directly in your browser and open a pull request from there.

• 🏁 Done Ask in comments for a review :)

Please keep us updated

💬⏰ - We encourage contributors to be respectful to the community and provide an update within a week of claiming a first-timers-only issue. We're happy to keep it assigned to you as long as you need if you update us with a request for more time or help, but if we don't see any activity a week after you claim it we may reassign it to give someone else a chance. Thank you in advance!

If this happens to you, don't sweat it! Grab another open issue.

Is someone else already working on this?

🔗- We encourage contributors to link to the original issue in their pull request so all users can easily see if someone's already started on it.

👥- If someone seems stuck, offer them some help! Otherwise, take a look at some other issues you can help with. Thanks!

🤔❓ Questions?

Leave a comment below!

[Diegoafv]

Can I do this one?

[saivoleti17]

Can I get one?

[littlepawcoding]

Hello, would like to claim this one please.