Commenting out some node emitters
Adding node processor, which helps converting token streams into nodes
Fixed a small issue in `NodeProcessor`
`Parser` now uses `NodeProcessor` for node processing
Remove duplicate
Removing coverage information
Merge pull request #21 from AnhNhan/nodeprocessor

Adding a basic Nodeprocessor

It, erm, can scan some 1D token stream like `3 + 5`. But it fails at `println 3 + 5` or `3 + (5 - 3)`.