Add bit manipulation section.

src/algorithms/math/bits/clearBit.js

@@ -0,0 +1,10 @@
+/**
+ * @param {number} number
+ * @param {number} bitPosition - zero based.
+ * @return {number}
+ */
+export default function clearBit(number, bitPosition) {
+  const mask = ~(1 << bitPosition);
+
+  return number & mask;
+}