Unfortunately—unless I missed a change in the release notes since Bots was introduced at WWDC—there isn't built in support for something like `pod install`, though there's probably a hack someone's figured out. See Michele Titolo's open radar here http://openradar.appspot.com/14221477
Jenkins is going to have alot more functionality, especially with 3rd party integrations and doing arbitrary work. Jenkins is also an ugly mess than can be painful to setup, especially since most iOS/Mac developers build from Xcode and not the command line. OS X Server gets some ease of use out of only doing running standard Tests, static analysis, and building your project for distribution (they bragged about 1-click downloads from their Bots website to people in your company, but I haven't tried that). Bots integrates with Xcode to give you a nice rundown of how tests ran on multiple devices and OSes.
Jenkins is going to have alot more functionality, especially with 3rd party integrations and doing arbitrary work. Jenkins is also an ugly mess than can be painful to setup, especially since most iOS/Mac developers build from Xcode and not the command line. OS X Server gets some ease of use out of only doing running standard Tests, static analysis, and building your project for distribution (they bragged about 1-click downloads from their Bots website to people in your company, but I haven't tried that). Bots integrates with Xcode to give you a nice rundown of how tests ran on multiple devices and OSes.