Remove .md and image files and move python files into main chapter folders

thinkcspy/Chapter-10-Exercises/Problem12.py

@@ -0,0 +1,21 @@
+# Runestone.Academy thinkcspy course
+# Chapter 10
+# Problem 12
+
+def count(lst):
+    # your code here
+    wordCount = 0
+    
+    for item in lst:
+        if type(item) is str:
+            if item != "sam":
+                wordCount += 1
+            else:
+                wordCount += 1
+                return wordCount
+            
+    return wordCount
+
+myList = ["apple", 5, 6, True, "purple", False, "mushroom", 11, "gen-x", "sam", 7, 10, "cause", "interim"]
+
+print(count(myList))