Fix dropbox-cli.

Dropbox doesn't version the CLI. This broke the download. This patch
also fixes the `dropbox-cli start' command.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Add myself as a maintainer of dropbox-cli.

Signed-off-by: Moritz Ulrich <moritz@tarn-vedra.de>
Merge pull request #637 from the-kenny/fix-dropbox-cli

Fix dropbox cli