Fix debug .Net 4.0 project - was targeting 4.5
Added Otsu binarization function from Leptonica

Wrapped the Binarize.c BinarizeOtsuAdaptiveThreshold from the unmanaged
Leptonica DLL
Merge pull request #19 from jeschergui/master

Addded Otsu binarization
Add GetHOCRText API method
Update to r835
Merge pull request #20 from nguyenq/master

Add hOCR support
Avoid accidental invalid path for temp location of embedded dlls

The process name was coming back with a ":" in the context of some unit
testing which was leading to an invalid temp path in EmbeddedDllLoader's
static constructor.  I've modified it to replace any invalid characters
with string.Empty.
Merge remote-tracking branch 'upstream/master'
Merge pull request #21 from tausten/master

Minor fix to EmbeddedDllLoader, and fixing .Net 4.0 project so it targets 4.0 instead of 4.5
Update ReadMe.md
Merge branch 'master' of https://github.com/charlesw/tesseract