Implemented artifact upload with travis.

Signed-off-by: William Lebel <lebelwilliam@gmail.com>
Added remapper plugin for Bukkit backwards compatibility.
Switched to building against Glowkit.
Fixed Travis publication.
Made logger use more uniform (fixes #255).
Fixed disconnect when sending empty chunks.
Changed sound radius to be min(volume * 16, 16).
Added block placement handling for ladders and vines (see #119).
Added CONTRIBUTING.md (thanks @JeromSar).
first version flintNSteel
Added events, durability on ItemFlintAndSteel
Added correct durability for ItemFlintAndSteel; Added EventFactory#onPlayerItemBreak
fixed missing import
restructure, added tnt/nether portal placeholder
Merge remote-tracking branch 'origin/FlintNSteel' into FlintNSteel

Conflicts:
	src/main/java/net/glowstone/block/ItemTable.java
	src/main/java/net/glowstone/block/itemtype/ItemFlintAndSteel.java