New QTodo logo as proposed in  #79

More contemporary and 'easy' look. Drops the .txt for better
legibility, puts the stress on the Q and the V-mark.
New QTodo logo files
QTodo OSX status bar icon (18px)
Merge pull request #81 from mattiasdh/master

New QTodo logo as proposed in #79
Merge branch 'master' of https://github.com/mNantern/QTodoTxt into auto-reload
a working auto-reload implementation on detected file changes
some cleanup