Add explanation of why Compile = {} in runtime

[first-timers[bot]]

🆕☝ First Timers Only

This issue is reserved for people who never contributed to Open Source before. We know that the process of creating a pull request is the biggest barrier for new contributors. This issue is for you 😃

About First Timers Only.

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🤔 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.

:clipboard: Step by Step

• [ ] 🙋 Claim this issue: Comment below. Please 🙏 only claim if you want to start working on it within a day.
• [ ] 📝 Update the file src/compile.js in the nebrelbug/squirrelly repository (press the little pen Icon) and edit the line(s) as shown below.

@@ -144,7 +144,7 @@ function Compile (str) {
   return func
 }

-if (RUNTIME) {
+if (RUNTIME) { // Don't include Sqrl.Compile() in the runtime library, to make it more lightweight
   Compile = {} // eslint-disable-line no-func-assign
 }

• [ ] Make sure your code follows StandardJS Guidelines. There needs to be a space after any //, and no more than 1 newline in a row.
• [ ] If you modified any JavaScript file with anything other than comments, run npm run build.
• [ ] 🔀 Start a Pull Request. Mention closes #THIS_ISSUE_NUMBER in the description. There are two ways that you can start a pull request:
  • 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.
  • You can edit files directly in your browser.
• [ ] 🏁 Done :+1: Ask in comments for a review :)

🤔❓ Questions

Comment and we'll try to help as soon as possible 😃

[chepora]

Hi! I would like to help with that.

[nebrelbug]

@chepora awesome! I'll reserve it for you.

[chepora]

Thank you! PR: #89