Rename check_for_boolean to check_for_boolean.md

snippets/check_for_boolean.md

@@ -0,0 +1,10 @@
+### Check for Boolean Primitive Values
+
+Check if a value is classified as a boolean primitive. Return true or false.
+
+function booWho(bool) {
+  return typeof bool === 'boolean';
+}
+
+// test here
+booWho(null);