Changed Automatic Module Name to org.dataloader

[zrbrown]

Fixes #110

graphql-java has the Automatic Module Name com.graphqljava, and it also directly depends on java-dataloader. Since java-dataloader also has the Automatic Module Name com.graphqljava, the module system cannot determine which module to use and so any usage of graphql-java with the module path is instantly broken.

This patch changes the Automatic Module Name to org.dataloader since that's the root package name.

Given that:

• Automatic Module Name is only relevant when using the module path
• java-dataloader is inherently always used with graphql-java, and so in its current state on the module path is completely broken

then I believe this is a passive change - not sure what the release process is around bumping versions since this is my first time contributing to this project. Let me know if I need to do anything else!