Pushover Client

% PUSHOVER - Push notifications to the Pushover (http://pushover.net) service.
%
% pushover
% Prints this help, the available options for the 'sound' setting and the
% currently saved (or default) preferences.
%
% OPTS=pushover
% Returns a structure OPTS with the current default options.
%
% pushover(OPTS)
% Saves the structure options as defaults.
%
% [retrStr,status]=pushover(TITLE,MESSAGE,OPTS)
% =pushover(TITLE,MESSAGE)
% =pushover(MESSAGE,OPTS)
% OPTS - settings to send a message.
% MESSAGE - Message to send. Limited to 512 characters.