set -e removed as the rules change from one Bash version to another, as Bash attempts to track the extremely slippery POSIX definition of this "feature". When a SubShell is involved, it gets worse still -- the behavior changes depending on whether Bash is invoked in POSIX mode.

Added a check on if the user has already cloned and also a set -e to exit immediately if a command exits with a non-zero status.

Conflicts:
	app/models/photo.rb

Conflicts:
	app/models/post.rb
	app/models/user.rb
	config/initializers/socket.rb

Added a newline before a list, so that the list can be properly interpreted as a list (Markdown syntax).

This reverts commit 8c0bc4b9.

This reverts commit d55c0ae5.