Adding some minor doc
Update 02 - Goals and purposes.md
Adding memory usage information to `test_parser.php`
Minor
Merge branch 'master' of github.com:AnhNhan/AnLang
Fixing `02 - Goals and purposes.md`
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)`.
Merge pull request #22 from AnhNhan/master

Updating nodeprocessor with stuff from master