New App Idea - Temperature Converter

Projects/1-Beginner/Temperature-converter.md

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+# Temperature Converter
+
+**Tier:** 1-Beginner
+
+The purpose of the application is to be able to quickly and easily convert most common temperature scales: Celsius and Fahrenheit.  You can also add extra scales, like Kelvin and Rankine.
+For a Fahrenheit-Celsius converter we need to know a formula: 
+T(°C) = (T(°F) - 32) / 1.8
+T(°F) = T(°C) * 1.8 + 32
+
+## User Stories
+
+-   [ ] User should be able to enter a number in an input field
+-   [ ] User should be able to press a "convert" button and could see the results in a single output field - the  equivalent of the other scale that was entered as an input
+-   [ ] If the "convert" button is pressed and the input field is empty, there should occur an error info
+-   [ ] User can press a "reset" button to empty the input field
+-   [ ] User can easily swap scales with pressing a "swap" button
+
+## Bonus features
+
+-   [ ] User can see the conversion after pressing "Enter" key
+-   [ ] User can see error info after inputting letters instead of numbers
+-   [ ] User can pick more scales, like Kelvin and Rankine
+
+## Useful links and resources
+
+-   [Fahrenheit to Celsius formula](https://www.mathsisfun.com/temperature-conversion.html)
+-   [Existing Converter](https://www.rapidtables.com/convert/temperature/fahrenheit-to-celsius.html)
+-   [FreeCodeCamp Basic Algorithm Scripting](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-algorithm-scripting/convert-celsius-to-fahrenheit)
+
+## Example projects
+
+-   [Fahrenheit-Celsius Converter](https://github.com/NataliaKiwibird/Training-projects/tree/master/converter)