- added close() method to VideoCapture base on opencv capture's "release"
method
- added experimental ReadSync method : this serves two purposes:
 * usefull when not using callbacks
 * a possible workaround for huge memoryleaks in videocapture
- added nan dependency
- updated binding.gyp
- ported all header files to the nan api
- continued work migrating api to nan
- migration of OpenCV.h/.cc done
- migration of init.cc done
- migration of Matrix.cc about half done
- migration of Contours.cc in progress
- ported Contours.cc
- finished converting Matrix.cc (preliminary pass)
 * no compile error in nw-gyp v0.10.5
- first pass migration of all relevant source done
 * compiling ok under node 0.11.13
 * missing a  number of async methods
- implemented NAN version of async methods for Matrix.cc
- migrate the async methods of VideoCaptureWrap to NAN
- added missing Nan conversion of async method
AsyncDetectMultiScale
- fixed immutability of Point class with Nan
- overall cleanup :
 * removed obsolete code , comments
Merge branch 'nodev11.x' of github.com:kaosat-dev/node-opencv into kaosat-dev-nodev11.x

Conflicts:
	src/Contours.cc
	src/Contours.h
	src/Matrix.cc
	src/VideoCaptureWrap.cc
Fixing merge some more, and compiler errors.
silence some compiler warnings
Use an up to date version of node. Can't be supporting 0.8 etc any more.
Remove bad import as suggested by @marcbachmann
can't clean before install
- fixed multiple node V0.11.x issues (ported more methods etc to Nan)
Fix a few compiler warnings