pod not working

OCiney-iOS-master ATLANTIS$ pod install
Analyzing dependencies

CocoaPods 0.36.0.rc.1 is available.
To update use: `gem install cocoapods --pre`
[!] This is a test version we'd love you to try.

For more information see http://blog.cocoapods.org
and the CHANGELOG for this version http://git.io/BaH8pQ.

Downloading dependencies
Installing AFNetworking (2.5.1)
Installing AnalyticsKit (1.2.4)
Installing DKScrollingTabController (1.1.2)
Installing ECSlidingViewController (2.0.3)
Installing EDStarRating (1.1)
Installing GPUImage (0.1.6)
Installing GoogleAnalytics-iOS-SDK (3.10)
Installing JBParallaxCell (0.0.1)
The authenticity of host 'github.com (192.30.252.128)' can't be established.
RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.
Are you sure you want to continue connecting (yes/no)? y
Please type 'yes' or 'no': yes

[!] Error installing JBParallaxCell
[!] /usr/bin/git clone git@github.com:jberlana/JBParallaxCell.git /Users/ATLANTIS/Downloads/OCiney-iOS-master/Pods/JBParallaxCell --single-branch --depth 1 --branch 0.0.1

Cloning into '/Users/ATLANTIS/Downloads/OCiney-iOS-master/Pods/JBParallaxCell'...

Warning: Permanently added 'github.com,192.30.252.128' (RSA) to the list of known hosts.

Permission denied (publickey).

fatal: Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.