fixed packaging API in jar
Include getAPIVersion and getImplementationVersion

This includes the getAPIVersion and getImplementationVersion methods added
to SpongeAPI (SpongePowered/SpongeAPI#12).

The only quirk right now is that they both return the same value.

Signed-off-by: Steven Downer <grinch@outlook.com>
Merge pull request #13 from Grinch/master

Include getAPIVersion and getImplementationVersion
Add build task to default tasks

Updated the README to account for this.

Signed-off-by: Steven Downer <grinch@outlook.com>
Merge pull request #14 from Grinch/patch-1

Add build task to default tasks
Update pre-commit hook to only do license formatting
Update README PR guidelines

Based on feedback so far
Add Contribution Guidlines link to README
Merge pull request #16 from simon816/readme-guideline-link

Add Contribution Guidlines link to README
Changes due to Events being interfaces
  Adds placeholder methods to Game with UnsupportedOperationExceptions
  Changes due to Event being an interface
+ Created new file Global.java
* Extracted most String Literals from across the project into one file.
Fixed minor mistakes, replaced tab with spaces
Fixed minor mistakes, replaced tab with spaces
Revert "Fixed minor mistakes, replaced tab with spaces"

This reverts commit daea6d150b4f1ba46e82062063efb0c7498a2c08.
Merge branch 'master' of https://github.com/Blizzardo1/Sponge