setting up readme

README.md

@@ -1,2 +1,22 @@
-# lightspeed-digits-repetition
+# Lightspeed digits repetition count
 A light and fast code to count digit repetition in a number written in c.
+
+# How it works?
+
+
+
+```
+0000 0000 0000 0000 0000 0000
+  6    5    4    3    2    1
+```
+
+* If we think an int 64bit as an array of bits you'll have something like this (if using 4bits in the BITS_LENGTH macro).
+* Each 4bits can contains up to 1111 or 15 (decimal).
+* We can consider each 4 bits block as a container which stores the repetion of the numbers.
+
+for instance, if we have 2 occurance of 4 we'll have...
+```
+0000 0000 0010 0000 0000 0000
+  6    5    4    3    2    1
+```
+where 0010 in decimal is 2.