Better SSH custom port integration

• Updates wpcli pull to include rsync if port is set (see #45)

Thanks to @pablojmarti

Easier dependency version float

• Removed explicit minor versions from dependencies declaration (see #40).
• Added .gemrelease for easier release.

Thanks to @dotsam!

Updated dependencies.

• capistrano to 3.6.0
• sshkit to 1.11.2
• bundler to 1.12.5
• rake to 11.2.2

See #37 for more information.

Thanks to @apertureless for this one.

Integration of rsync port setting and updated documentation.

Merge pull request #31 from jeremyzahner/master

Utilize ssh_options for setting rsync port.

Updated dependencies.

v0.1.1

Added dependencies badge to readme.

v0.1.0

Changed version in gemspec.