the idea of bit stuffing is to replace every two 1's with
110
(redundancy) !!
thats because .. to avoid having a 0111 in the middle of the
data !!
as 0111 is a delimator !!
those ,
we will get
(0111) 01101100110110101101101100 (0111)
where (0111) is the start and end delimator !!