Users can click to add markers

![image](https://cloud.githubusercontent.com/assets/8669803/5184451/9a5e0b30-7485-11e4-9952-97119e1b549f.png)

Since the variable is unused, it can be removed and this line can start with `new`. Setting the variable is like setting a variable on the last line of a Ruby method: unnecesssary.

```ruby
def coolstuff
  x = "three"
end
````