Order exercise folders

Ordered the exercise folders by placing their numbers in their folder name

07 tempConversion/README.md

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+# Exercise 07 - tempConversion
+
+Write two functions that convert temperatures from Fahrenheit to Celsius, and vice versa:
+```
+ftoc(32) // fahrenheit to celsius, should return 0
+
+ctof(0) // celsius to fahrenheit, should return 32
+```
+
+Because we are human, we want the result temperature to be rounded to one decimal place: i.e., `ftoc(100)` should return `37.8` and not `37.77777777777778`.
+
+This exercise asks you to create more than one function so the `module.exports` section of the spec file looks a little different this time.  Nothing to worry about, we're just packaging both functions into a single object to be exported.
+
+## Hints
+- You can find the relevant formulae on [Wikipedia](https://en.wikipedia.org/wiki/Conversion_of_units_of_temperature).
+
+- Try to find by yourself on the Internet how to round a number to 1 decimal place in JavaScript. If you struggle, have a look [here](https://stackoverflow.com/q/7342957/5433628).

07 tempConversion/tempConversion.js

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+const ftoc = function() {
+
+};
+
+const ctof = function() {
+
+};
+
+module.exports = {
+  ftoc,
+  ctof
+};

07 tempConversion/tempConversion.spec.js

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+const {ftoc, ctof} = require('./tempConversion')
+
+describe('ftoc', () => {
+  test('works', () => {
+    expect(ftoc(32)).toEqual(0);
+  });
+  test.skip('rounds to 1 decimal', () => {
+    expect(ftoc(100)).toEqual(37.8);
+  });
+  test.skip('works with negatives', () => {
+    expect(ftoc(-100)).toEqual(-73.3);
+  });
+});
+
+describe('ctof', () => {
+  test.skip('works', () => {
+    expect(ctof(0)).toEqual(32);
+  });
+  test.skip('rounds to 1 decimal', () => {
+    expect(ctof(73.2)).toEqual(163.8);
+  });
+  test.skip('works with negatives', () => {
+    expect(ctof(-10)).toEqual(14);
+  });
+});