Added cropToImageEdges method to Line class
Corrected method extendToImageEdges in Line class.
Tests added for cropToImageEdges and extendToImageEdges
Corrected bresengam_line method in ImageClass.

There was a bug with cropping lines. So if the line bigger than image
then it just set endpoints to image edges without saving slope of the
line.
Update Display.py

Added a check for "simplecv.png" before assigning it as icon
fix minValue and maxValue
fix min and max
Fixed AVTCamera connect & disconnect issue
Merge branch 'develop' of github.com:sightmachine/SimpleCV into develop
HaarCascade filepath bug solved
cv2 support for haarcascades
cv2 support for haarcascades
cv2flag added
Fancified
Merge
fixes sidebyside()
graynumpy copy
Merge pull request #480 from rajatkapoor/sbs

fixes sidebyside()
Merge pull request #481 from vighneshbirodkar/snap-correct

EdgeSnap - fixing grayNumPy copy. Nice catch.
Merge branch 'fixes' of github.com:rajatkapoor/SimpleCV into rajatkapoor-fixes