No longer need to hide t/
Included a new script and sample files to test each DEFLATE block type.
Fixed Huffman tables for distance codes do not need to be computed if BTYPE=01.
Some macros do not need to be blocks.
Added 'Testing' heading for each run.
No longer need to create t/
No longer need to create t/. Added '.' to heading.
Comparing the incorrect file.
Added test files to .gitignore.
Updated README

- Added note about test-btypes.
- Added description of both files in implementation notes.