Merge pull request #1 from Qiki/Objective_C

Quick find in Objective C
Revert "Quick find in Objective C"
Merge pull request #2 from GingerBear/revert-1-Objective_C

Revert "Quick find in Objective C"
Fixed the find root method in the quick union and weighted quick union
Merge remote-tracking branch 'upstream/master' into ROOT_METHOD_REVISED
Merge pull request #8 from Qiki/ROOT_METHOD_REVISED

ROOT METHOD FIXED