Added more information to README.cmake - how to get a list of possible interfaces.
Added more information to README.cmake - how to get a list of possible interfaces.

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