add heap.scala for Scala implementation
- results for Ruby
Merge pull request #4 from Wizmann/master

add heap.scala for Scala implementation
- improved Scala implementation to be closer to C++/Java/JavaScript
- results for Scala
- php implementation
Added heap.go implementation
Merge pull request #5 from juancate/go

Added heap.go implementation
- go implementation
- changed Scala implementation, switched to use Scala 2.10.3