Tests to show failing support
Correctly parse exec when there's spaces

Closes #418
Closes #419

This version will handle quoted entities in the exec string or escaped spaces correctly, so the user can run:

--exec '"/bin/my cool app" {{filename}}'

Or

--exec '/bin/my\ cool\ app {{filename}}'

This will work both on the command line and from the API.
Better tests for scripts with spaces
Remove verbose messaging in test
nodemon api support array for exec + tests
Fixed string interpolation with array exec
Increase test timeout
Merging @gfxmonk's exec tests
Merge pull request #433 from remy/fix/escaped-exec

Correctly parse exec when there's spaces