add ppa for travis and cmake 2.8.9
add ppa for travis and cmake 2.8.9

lisitsyn/shogun,karlnapf/shogun,Saurabh7/shogun,Saurabh7/shogun,lambday/shogun,besser82/shogun,shogun-toolbox/shogun,sorig/shogun,karlnapf/shogun,karlnapf/shogun,Saurabh7/shogun,sorig/shogun,sorig/shogun,shogun-toolbox/shogun,karlnapf/shogun,lambday/shogun,lisitsyn/shogun,shogun-toolbox/shogun,geektoni/shogun,lambday/shogun,Saurabh7/shogun,geektoni/shogun,besser82/shogun,besser82/shogun,Saurabh7/shogun,sorig/shogun,karlnapf/shogun,lambday/shogun,karlnapf/shogun,shogun-toolbox/shogun,Saurabh7/shogun,besser82/shogun,Saurabh7/shogun,Saurabh7/shogun,sorig/shogun,besser82/shogun,besser82/shogun,lambday/shogun,Saurabh7/shogun,sorig/shogun,lisitsyn/shogun,geektoni/shogun,lisitsyn/shogun,geektoni/shogun,lisitsyn/shogun,geektoni/shogun,geektoni/shogun,shogun-toolbox/shogun,lambday/shogun,lisitsyn/shogun,shogun-toolbox/shogun