Add indentation challenge (#4)

* Added new dir to add new challenges releated to indendation

* Added indendatiom challenge and a snanshot of the error on the terminal

* Added steps on what to do and how to run the file

* Removed the contents in readme file

Looks good @shivahari . I read the code and checked the image. Both seemed easy enough to follow for me.

Author: shivahari

04_challenge/04_challenge.py

@@ -0,0 +1,34 @@
+"""
+We will use this script to teach Python to absolute beginners
+The script is an example of Fizz-Buzz implemented in Python
+
+The FizzBuzz problem: 
+For all integers between 1 and 99 (include both):
+    # print fizz for multiples of 3
+    # print buzz for multiples of 5 
+    # print fizzbuzz for multiples of 3 and 5"
+"""
+
+def fizzbuzz(max_num):
+    "This method implements FizzBuzz"
+    
+    # adding some redundant declarations on purpose
+    # we will make our script 'tighter' in one of coming exercises
+    three_mul = 'fizz'
+    five_mul = 'buzz'
+    num1 = 3
+    num2 = 5 
+
+    # Google for 'range in python' to see what it does
+    for i in range(1,max_num):
+        # % or modulo division gives you the remainder 
+        if i%num1==0 and i%num2==0:
+        print(i,three_mul+five_mul)
+        elif i%num1==0:
+            print(i,three_mul)
+        elif i%num2==0:
+            print(i,five_mul)
+
+#----START OF SCRIPT
+if __name__=='__main__':
+    fizzbuzz(100)