Fix typo
Merge pull request #26 from jakschu/patch-1

Fix typo
Added rsync error handling and modified WARN and ERROR functions to print to
stderr
Deleting log file when no error is found and proper handling of rsync errors
through log file rather than through exit code
Merge pull request #27 from bhuvi8/master

Added rsync error handling and modified WARN and ERROR functions to print to stderr
OS X compatibility and splitted rsync errors and warnings

- Fixed bug on OS X since "--" is not supported by sed.
- Changed sed to grep for consistency with rest of the code.
- Splitted handling of rsync errors/warnings - for errors we quit with
  an error code, for warnings we print a message but complete the backup
  process.
Update README.md

Testing status.
Attempting to fix conflicts with upstream