Update doc/service.txt

Removed trailing comma from 'Create a new service' example as currently example will fail if copied.
Merge pull request #5 from evolve2k/patch-1

Update doc/service.txt
Configure on HAVE_TCHAR_H to fix build on cygwin

Cygwin does not have tchar.h, so in that case fall back to just use a
plain char type.
Merge pull request #7 from jeckersb/no-tchar-on-cygwin

Configure on HAVE_TCHAR_H to fix build on cygwin
Explicitly require devkit if mingw for gem create task.
Merge branch 'master' of github.com:djberg96/win32-service
Fixed unused and/or misnamed variables.
Added changes so far for 0.7.3.
Removed some unused variables from the daemon.c source file.