Merge pull request #8 from markcaudill/master

This merge adds fix for issue #5 which @markcaudill fixed by having all real-time signals handled by a dummy handler if it doesn't have a refresh signal .

diff --cc dwmblocks.c
index 2f3b774664cfca6eac7e016b946b1eed3088f9cf,7d4616d1d2506f3388091e6adaa6ede473218b8f..8668f042d77bea8510570564fe82f78de5bc5463
--- 1/dwmblocks.c
--- 2/dwmblocks.c
+++ b/dwmblocks.c
@@@ -13,7 -13,9 +13,8 @@@ typedef struct 
        unsigned int interval;
        unsigned int signal;
  } Block;
+ void dummysighandler(int num);
  void sighandler(int num);
 -void replace(char *str, char old, char new);
  void getcmds(int time);
  #ifndef __OpenBSD__
  void getsigcmds(int signal);