Remove test for variadic wait_list::insert()
added opencv optical flow example
Add algorithm and test for stable_partition

Added algorithm and test for stable_partition.
Changed partition to use it for now till a
better implementation is found
Merge pull request #117 from roshanr95/stable_partition

Add algorithm and test for stable_partition
Merge pull request #118 from Mageswaran1989/master

added opencv optical flow example
Support conversion of lambda expressions to function objects
Merge pull request #37 from kylelutz/develop

Update Develop