Updated README
Add library semantic version property
Added monochrome transform option.
Fixed DisplayImage error. Fixed grayscale/invertcolors not being appl… …ied in some cases.
Fixed FromBitmap Options not being applied
Fixed OCR.FromBitmap major memory leak
Fixed incorrect IsSet check
Fixed FromDesktop lang option not being applied
Fixed CreateHBitmap memory leak
Added start and end parameters to OCR.FromPDF