documented find and find_if resolves issue #118
documented find and find_if
resolves issue #118

julianromera/thrust,lishi0927/thrust,h1arshad/thrust,malenie/thrust,levendlee/thrust,h1arshad/thrust,rdmenezes/thrust,rdmenezes/thrust,bfurtaw/thrust,h1arshad/thrust,julianromera/thrust,google-code-export/thrust,malenie/thrust,rdmenezes/thrust,UIKit0/thrust,Vishwa07/thrust,google-code-export/thrust,h1arshad/thrust,rdmenezes/thrust,google-code-export/thrust,bfurtaw/thrust,hemmingway/thrust,Vishwa07/thrust,julianromera/thrust,allendaicool/thrust,bfurtaw/thrust,Vishwa07/thrust,julianromera/thrust,allendaicool/thrust,hemmingway/thrust,allendaicool/thrust,levendlee/thrust,lishi0927/thrust,google-code-export/thrust,lishi0927/thrust,malenie/thrust,UIKit0/thrust,allendaicool/thrust,Vishwa07/thrust,UIKit0/thrust,UIKit0/thrust,hemmingway/thrust,bfurtaw/thrust,lishi0927/thrust,malenie/thrust,levendlee/thrust,hemmingway/thrust,levendlee/thrust