Added instructions to tap homebrew/science for OpenCV

Homebrew removed OpenCV from its main repo on Sunday. This ensures you
still can install it.

Details: https://github.com/mxcl/homebrew/commit/9495b06ef3f35be8711902ce268
add anotehr todo item
add item to todo list (and merge)
Update README.md
Merge pull request #26 from myersjustinc/tap-opencv

OpenCV was removed from Homebrew core this past weekend. Fix instructions.
Merge pull request #27 from mroswell/master

correct typo in README.md
docs regarding setup
link to Source post in readme (to give githubbers a reference point)
good catch, @sinker. closing #29
Merge remote-tracking branch 'origin/master'
remove GAnalytics tag
evil no more (#5)
Remain impartial to users' tool selection
Merge pull request #35 from bradland/patch-3

Remain impartial to users' tool selection
Ignore .ruby-gemset for gemset users
merge
Merge pull request #39 from bradland/patch-4

Ignore .ruby-gemset for gemset users
Merge branch 'master' of github.com:jazzido/tabula into tabledetection
fix an IE-only conditional that for some reason was erroring out in Chrome.
Merge branch 'tabledetection' of github.com:jazzido/tabula into tabledetection