Merge remote-tracking branch 'm0r13/master'

Added comment about crop_exmaple.py script to readme.

Merge pull request #30 from m0r13/master

Added script to remove unnecessary chunks.

Removed executable bit of readme.md

Merge pull request #29 from m0r13/master

Removed some water/lavafalls on the west side.

New 1.7 blocks.

Merge pull request #28 from m0r13/master

Updated readme with new blocks, fixed small typo.

Added some new 1.6.2 blocks.

Merge pull request #27 from overviewer/exmaple-snapshots

configurable option to disable player/world filter

version 1.55 - added 12w49a blocks: nether brick. 13w01a blocks: nether quartz ore, redsstone block, weighted pressure plate, trapped chests, hopper, daylight sensor block, and redstone comparator (capacitor).

Merge pull request #20 from overviewer/exmaple-snapshots