Add checking for Function.prototype.bind() exists

[DeadByElpy]

Hi.

I work with browsers that are so old that they don't have 'bind' function (Function.prototype.bind() ) and this line (src/livereload.coffee:20) causes an error, which crash all livereload.
Can you add check to the 'bind' function existence?

Somethin like that:

error: this.window.console.error.bind ? this.window.console.error.bind(this.window.console) : function() {}

I hope that you can add this small checking ;)

[ahx]

Same problem here, using phantomjs.