Merge pull request #1724 from iglesias/develop

Update README_developer.md
add default cache size to chi2 kernel
drop COPYRIGHT file and explicitly mention licenses in README.md and
LICENSE_*
various compiler warning fixes
link authors, contributions and cmake readme from README
update readme and mention how to do a release in the developer readme
and when to change the soname.
Improve the SVM notebook and add a proper get_likelihood_example
function to CGMM and get_likelihood_all_examples to CDistribution
Merge pull request #1726 from iglesias/develop

Update AUTHORS.md
Fixing data path in python modular examples.
Merge pull request #1727 from tklein23/develop

Fixing data path in python modular examples.
Fixed install instructions.  Added export instructions in case of custom install directory.
Merge pull request #1728 from tklein23/develop

Fixed install instructions.  Added export instructions in case of custom install directory
add slightly polishes svm example
commit again w/o output
Polished the NEWS file a bit to highligh GSoC projects
added comment
Correct names in GSoC 2013 list
changed debug to info
added proper error message in case of NULL pointer parameter
removed assertion that broke things but did not help at all