FBのOauth通した closes #2

new file:	server/Gemfile
new file:	server/Gemfile.lock
new file:	server/app.rb
new file:	server/config.ru

new file:	.gitignore
delete:		client/.gitkeep
delete:		server/.gitkeep
delete:		slide/.gitkeep
Merge branch 'feature/id/2' into develop