Fix key name to switch between MSER/CSER regions.
fixing build with extra modules
Merge pull request #75 from StevenPuttemans/fix_build_includes

fixing build with extra modules
Merge pull request #69 from thorikawa/fix-usage-text

Fix key name to switch between MSER/CSER regions.
fixing further nonfree elements
HDR tutorial text removed from edge detection
Merge pull request #79 from PhilLab/patch-1

HDR tutorial text removed from edge detection
Merge pull request #77 from StevenPuttemans/fix_nonfree

fixing further nonfree elements