Merge pull request #195 from roshanr95/binary_find

Binary find
Add bind() function
explicitly look for Qt4 and not for Qt in general
Merge pull request #200 from kylelutz/bind

Add bind() function
Merge pull request #203 from f-koehler/master

explicitly look for Qt4 and not for Qt in general
Add benchmark for nth_element
Improve nth_element performance