Add GNU Build System preparation script
Fix typo in NEWS
Do not install libudev.h, just provide it in source dist
Release 0.6.0
Provide a pkg-config file.

This is quite useful for integration into another project. On
autotools-based project, the dependency can be resolved with something
like:

    PKG_CHECK_MODULES([LIBSUINPUT], [libsuinput >= 0.5])
Merge pull request #3 from vincentbernat/feature/pkg-config

Provide a pkg-config file.
Adding preprocessor directive to facilitate linking in C++
Referencing symbolic link version of libudev
Merge pull request #5 from eemikula/master

Compilation improvements

See https://github.com/tuomasjjrasanen/libsuinput/pull/5
Give credit to AUTHORS
Release 0.6.1
Replace launchpad.net URLs with github.com URLs
Replace launchpad.net URLs with github.com URLs
Update libsuinput to '16a1b61d7574751de8cf27893ca3bd71137404b5'
Mention Launchpad->GitHub transition in NEWS