Add nuget to ubuntu-precise; resolves travis-ci/apt-package-whitelist#930
Add nuget to ubuntu-precise; resolves travis-ci/apt-package-whitelist#930

Packages: nuget libnuget-core-cil libnuget-core-cil-dev

jmerkow/apt-package-whitelist,travis-ci/apt-package-whitelist,christophgysin/apt-package-whitelist,travis-ci/apt-package-whitelist,jmerkow/apt-package-whitelist,christophgysin/apt-package-whitelist,phw/apt-package-whitelist,phw/apt-package-whitelist,AlCutter/apt-package-whitelist,AlCutter/apt-package-whitelist