changed something to avoid future errors
added somethings to algorithm selector
added somethings
fixed some errors
fixed some bugs
Merge pull request #7 from Academic-KevinRobayna/algorithm

fixed some bugs
added some declaration
added more things
added constructor and destructor definition
added greedy::change
added greedy:: is equal and initCentroidVector
added Greedy::GenerateSolution
fixed an error
fixed another error
added some comments
modified somethings
added greedy
Merge pull request #8 from Academic-KevinRobayna/algorithm

added Greedy algorithm
added declaration of class solution
added some declarations