Update year to 2014 [ci skip]

Useful command:
```bash
find . -type f -name *.java -exec sed -i 's/\-2012/\-2014/g' {} \;
```
Merge pull request #614 from agouge/update-year

Useful command:
```bash
find . -type f -name *.java -exec sed -i 's/\-2012/\-2014/g' {} \;
```