Cosmetic: go fmt
Cosmetic: fix typo in log message
Update README to reflect increased disk size

Changed in d48d46306f0d3c2ac53f9bd0496f8644d93b785e
Use log.Printf instead of log.Fatalf
Replace reflect with type assertion
Capitalise SSHWaitTimeout for consistency
Merge pull request #5 from chengsun/master

Minor cosmetic changes