PollingZMQSocket,poll: Use const reference for 'ZMQException'.
PollingZMQSocket,run: Emit signal in case of a poll error.
repo: Add '.gitignore' file.
changelog: Update.
changelog: Update.
license: Updated copyright year.
readme: Fixed typo.
readme: Added 'Dependencies' section.
extrnals,cppzmq: Added 'cppzmq' as submodule.
setup-project: Set executable bit of shell script.
versioninfo: Use '3.2.0-dev' as non-released development version.
project: Remove obsolete 'COPYING' file from project.
project: Removed trailing '/' from include path entry.
fixes gh-8: Code now does not depend on destroyed signal anymore.

The new implementation now makes sure a 'ZMQContext' instance unregisters itself from its 'ZMQContext' as soon as it is deleted by calling 'ZMQContext::unregisterSocket' method within the destructor. So the problem described in issue gh-8 should be resolved, too.
gh-8,changelog: Update.
wiki: Added Github Wiki as submodule.
repo: Renamed files '*.markdown' to '*.md'.
project: Fixed project file references.
wiki: Removed Github Wiki submodule.
README,doc: First attempt to restructure documentation for sharing it with the project's Wiki.