Make shebang portable
Add a system test

Previously, the tests did not cover command-line usage.
Merge pull request #5 from myint/portable

Portability and testing
Make sure MANIFEST.in is never ignored

Fixes https://github.com/mgedmin/check-manifest/issues/7
Remove check_manifest from tox.ini

It breaks 'make release', which wants to run 'make distcheck' from an
unpacked sdist.

Instead run check_manifest explicitly in 'make distcheck'.
Release 0.11
Post-release version bump
 Add suggestion pattern for `Makefile`
More generic suggestion patterns, should cover almost anything
Hook up coveralls.io
Add a coverage.io badge to the README
Ignore .coverage
Include the smoke-test run in the coverage
Really include the smoke-test run in the coverage

Turns out --source=check_manifest doesn't work when you execute
check_manifest as a script ("module check_manifest never imported" or
something like that).
Improve test coverage
zest.releaser integration: skip non-Python packages

Fixes issue #9
Prepare to release 0.12
Post-release version bump