Adding README.md for some projects

Python Developer/Hangman/README.md

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+# Hangman
+
+## About
+
+Hangman is a popular yet grim puzzle game. A cruel computer hides a word from you, which you try to guess letter by letter. If you fail, you'll be “hanged”. If you win, you'll survive. You’ve probably played the game at least once or twice. Now you can actually create this game yourself!
+## Learning outcomes
+
+With functions, loops, lists and other variables, this is a great project for Python basics. As a cherry on top, it even includes a random module. Don’t be intimidated by the number of stages; they ensure that your dive into Python is safe and smooth.

Python Developer/Loan Calculator/README.md

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+# Loan Calculator
+
+## About
+
+Personal finances are an important part of life. Sometimes you need some extra money and decide to take a loan, or you want to buy a house using a mortgage. To make an informed decision, you need to be able to calculate different financial parameters. Let’s make a program that can help us with that!
+
+## Learning outcomes
+
+You will practice using mathematics and Python in everyday tasks and learn how to use third-party modules and libraries. You will also learn more about different financial instruments.

Python Developer/Simple Tic-Tac-Toe/README.md

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+# Simple Tic-Tac-Toe
+
+## About
+
+Everybody remembers this paper-and-pencil game from childhood: Tic-Tac-Toe, also known as Noughts and crosses or Xs and Os. A single mistake usually costs you the game, but thankfully it is simple enough that most players discover the best strategy quickly. Let’s program Tic-Tac-Toe and get playing!
+
+## Learning outcomes
+
+After finishing this project, you'll get to know a lot about planning and developing a complex program from scratch, using functions, handling errors, and processing user input.