Preprocessing of the input matrix
Merge branch 'master' of https://github.com/sw701e14/CollaborativeFilteringTeamAwesome

Conflicts:
    CollaborativeFiltering/CollaborativeFiltering/CollaborativeFiltering.csproj
Merge branch 'master' of https://github.com/sw701e14/CollaborativeFilteringTeamAwesome

Conflicts:
    CollaborativeFiltering/CollaborativeFiltering/CollaborativeFiltering.csproj