properties and methods highlight (#40) + Filter

* changed params/methods are highlighted with a blue (#3b8ede) indicator
* custom params/methods are highlighted with a blue (#3b8ede) indicator and green (#799a05) text
* method overrides are highlighted with an orange (#ff9016) indicator and text

![properties](https://cloud.githubusercontent.com/assets/203805/2550890/228d36b4-b688-11e3-8d3b-9a350da76f4c.png)
![methods](https://cloud.githubusercontent.com/assets/203805/2550891/228f4ba2-b688-11e3-8524-37871183bfbd.png)