Make kmod.modprobe() raise an error if no modules found

Add 'quiet' option to override.

Add docstring.

Signed-off-by: Andy Grover <agrover@redhat.com>
Issue #13 skipping building extensions on non-Linux platforms
Merge pull request #14 from Infinidat/master

issue #13
update version to 0.9.1

Signed-off-by: Andy Grover <agrover@redhat.com>
Issue #15 Cython is now a dependency
Issue #15: Cython needs to be in setup_requires

We need Cython BEFORE installing kmod (done with setup_requires),
and AFTER installation - during runtime (done with install_requires)
Issue #15: resovled by using setuptools_cython
Merge pull request #16 from Infinidat/master

Issue #15