add executables and compilation products to the gitignore
Merge branch 'master' of github.com:divarvel/hammertime
Add tests skeletton
hlint / -Wall fixes
Follow XDG base dir spec

The event log is now stored in $XDG_DATA_HOME/hammertime/events
Fix: ensure the existence of the data dir at startup.

Closes #4
Temporarily remove the details section of CmdArgs

Refs #3