lib/client.js
function(method, url, timestamp) {
        var data = [method, url, this.options.publicKey, timestamp].join('|'),
            signature = crypto.sha256(this.options.privateKey, data);

        return signature;
    }
function(method, url, timestamp) {
        var data = [method, url, this.options.publicKey, timestamp].join('|'),
            signature = crypto.sha256(this.options.privateKey, data);

        return signature;
    }
function ( method , url , timestamp ) { var data = [ method , url , this . options . publicKey , timestamp ] . join ( '|' ) , signature = crypto . sha256 ( this . options . privateKey , data ) ; return signature ; }
Generate a signature for the given parameters

@param  {String} method
@param  {String} url
@param  {String} timestamp
@return {String}
Generate a signature for the given parameters