Log Message:
Update to 0.5.2

* Set LICENSE.

Changelog:
    2013-03-08: gtick-0.5.2 release: Translation updates, bugfixes
    2012-03-26: gtick-0.5.1 release: Translation updates, MIN_BPM adjustment
    2011-08-06: gtick-0.5.0 release: Pulseaudio support, bugfixes, translations
    2008-05-22: gtick-0.4.2 release: Several new translations, minor code and \ 
packing adjustments
    2007-08-18: gtick-0.4.1 release: Fixed segfault on using custom sound file
    2007-08-14: GIT repository launched
    2007-08-13: gtick-0.4.0 release: GPLv3 release, Updated Dutch, Finnish, \ 
Irish, Italian and Vietnamese translations
    2007-05-05: gtick-0.3.15 release: Added Slovak translation, fixed automake \ 
link options (LDADD, see ChangeLog)
    2007-04-29: gtick-0.3.14 release: Updated Russian, Ukrainian and Vietnamese \ 
translations
    2007-02-12: gtick-0.3.13 release: Added Korean translation, fixed zombies \ 
after metronome start / stop