Cleaned up where do I belong challenge

seed_data/bonfires.json

@@ -239,15 +239,13 @@
     "name": "Where do I belong",
     "difficulty": "1.61",
     "description": [
-      "Return the lowest index at which a value (second argument) should be inserted into a sorted array (first argument)."
+      "Return the lowest index at which a value (second argument) should be inserted into a sorted array (first argument).",
+      "For example, where([1,2,3,4], 1.5) should return 1 because it is greater than 1 (0th index), but less than 2 (1st index)."
     ],
     "challengeSeed": "function where(arr, num) {\n  // Find my place in this sorted array.\r\n  return num;\r\n}\n\nwhere([40, 60], 50);",
     "tests": [
-      "var numbers = [10, 20, 30, 40, 50], num = 35;",
-      "var indexForNum = where(numbers, num);",
-      "assert.equal(indexForNum, 3, '35 should be inserted at index 3');",
-      "var indexFor30 = where(numbers, 30);",
-      "assert.equal(indexFor30, 2, '30 should be inserted at index 2');"
+      "expect(where([10, 20, 30, 40, 50], 35)).to.eql(3);",
+      "expect(where([10, 20, 30, 40, 50], 30)).to.eql(2);"
     ]
   },
   {