Added option wrap_before_operator: Break lines before "+" or "." These are moved to the next line.

Added option wrap_before_operator: Break lines before "+" or "."
These are moved to the next line. 

Example:
var hansi = this.is.my.super
    .operator.that.can.be_splitted;

var mystring = "asdfasdf" + "asdfasdfasdf"
    + "asdfasdfasdfasdfasdfasd"
    + "hello";