Change submoduleGitURL to be an NSString.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Add backticks around the ref to encoding property.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Change name of fetch content method.

- Reads a lot better now.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Update OCTContentSpec to reflect API changes.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Make it easier to read.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Add assertion for all the things.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>