Update installer.sh
Typo fix to crash dump
Removed old PluginManager::getInstance()
Update installer.sh
Fixed a typo

(Is this really a typo? But it seems so...)
Little fix for generateLevel()

Check if $generator is the default value NULL instead of false
Merge pull request #1451 from wiezz/patch-1

Little fix for generateLevel()
Merge pull request #1440 from PEMapModder/cr-br-6

Fixed a typo at PermissibleBase
Added time command
Merge pull request #1453 from onebone/Core-Rewrite

Added time command
Merge pull request #2 from PocketMine/Core-Rewrite

Core rewrite