Merge pull request freeCodeCamp#20 from vladdoster/1.3_input

Completed and tested challenge 1.3 on input.

Author: Ethan-Arrowood

challenges/1.3.Input/lesson.md

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+## Python Input
+
+In Python 3, to get user input, use the input function and pass a string in as a parameter.
+You can assign this function to a variable in order to save input.
+- https://docs.python.org/3/library/functions.html#input
+
+The input() function can take numbers and words as valid answers. All input is saved as a string regardless if they are numbers!
+In the example below, the input is saved to the 'school' and 'grade' variables they can be used later!
+
+```
+>>> school = input('What school do you go to?')
+What school do you go to? Harvard
+>>> grade = input('What grade are you in?')
+What grade are you in? 4th
+>>> print (school)
+ Harvard
+>>> print(grade)
+ 4th
+>>>
+```
+
+
+**_Instructions:_**
+**Prompt the user for their name and age. Print them out to console!**

challenges/1.3.Input/lesson_code.py

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+### Modify the code below ###
+
+#Ask the user for their name!
+Name = ''
+
+#Ask the user for their age!
+Age = ''
+
+print(Name)
+print(Age)
+
+### Modify the code above ###

challenges/1.3.Input/lesson_settings.json

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+{
+  "lesson_title": "Input Edit",
+  "chapter_number": 1,
+  "lesson_number": 3,
+  "id":"592f1cc969cf862d8a7bb7f2",
+  "repl": ""
+}

challenges/1.3.Input/lesson_tests.py

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+import unittest
+import lesson_code
+
+class InputTests(unittest.TestCase):
+    def test_main(self):
+        name = lesson_code.Name
+        age = lesson_code.Age
+
+        self.assertIsInstance(name, str)
+        self.assertIsInstance(age, str)
+# To run the tests from the console:
+# Make sure that you are in the '1.3.Addition' directory
+# python3 -m unittest lesson_tests