Added a .gitignore file.  General file cleanup
Reduced .gitignore file and enable nuget restore for MonoGame
removed some content files
Merge https://github.com/louisMyu/GameName1
Removed the need for the XNAHelper class by using a different namespace
Merge pull request #1 from djkoberstein/master

.gitignore & nuget Monogame dependencies, removes XNAHelper by using a service to get the accelerometer