Attempted to fix the Projection Upper band and lower band calculation

[abhishekmittal15]

Attempting to fix #218

Modified the projection Oscillator function by changing the calculation of the arrays pu and pl according to what I suspect the issue is, as I mentioned in the conversation of #218 Hi @cinar , Please have a look at the code which has LOOK HERE written, that is the changes made to the implementation mainly. Let me know what you think about it.

The file is messy right now, I will clean it after you have approved the changes in the logic part of the code.

I also needed advice on how I can test this indicator.

Thanks