rsi with bb [or]

rsi has 2 line. 30 and 70.
but we can use BB instead of that.
i dont know it is good idea or not.
cause i rarely use rsi .
anyway if you are interested in it, you can try :)
enjoy and earn money.

릴리즈 노트: added line title.
so you can make alert using that title.

릴리즈 노트: changed BB more smooth but only use 70 period.
it use sma of sma :) very smooth.

릴리즈 노트: changed design. and some math things...

릴리즈 노트: stabilized BB

릴리즈 노트: in v0.5, BB is too much smooth.
in v0.51, BB like classic BB.