Why you add Rediska::EOL after command?

in Rediska_Connection.php:175:

```
$needToWrite = (string) $string . Rediska::EOL;
```

and result:

```
"*3\r\n$3\r\nSET\r\n$5\r\nmykey\r\n$7\r\nmyvalue\r\n\r\n"
```

twemproxy throws error "Invalid argument"

without EOL - all ok:

```
$needToWrite = (string) $string;// . Rediska::EOL;
```
