Modified gitignore to VisualStudio.gitignore from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore

Altered CrisisCard.cs to include CylonActivation Enum, bool for jump prep
Altered CrisisCard.cs with new member, SkillCheck. (Not all crises have a skill check)
Added new class, SkillCheck, to handle all skill check operations
Moved Consequences to own class