More detail for --extra flag.
Minor adjustments.
Fixed unit tests to display output for the --extra and --sender flags.
Adjusted test script for new flags.
Shortened --extra setting.
Added quotation marks to printed command for target, extra and sender in unit testing.
Bumped minor version number because unit testing is important.
Merge pull request #41 from Hasimir/master

Unit test updates, flag descriptions, etc.