Update to use OpenCV version 2
Update README instructions for OpenCV
Fix error message in som.py by completing the renaming of the displayColorImage and displayGrayImage classes that were updated in commit 9008077ae450782a1047ce057cde0f287f3763c3
Merge pull request #15 from cosmoharrigan/som-fix

Fix error message in som.py by completing the renaming of the displayCol...
Merge pull request #14 from cosmoharrigan/opencv2

Update to OpenCV version 2
clearer WindowsBuild instructions