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
Favor an import over a qualification

Signed-off-by: Ollie <o.dzineit@gmail.com>
Merge pull request #34 from DziNeIT/patch-1

Favor an import over a qualification
Test a GitHub web hook by fixing a typo in the README.

Just testing a web hook.
Update README.md, add CONTRIBUTING.md and run folders

Run folders are there so someone doesn't have to manually create them to
follow our instructions, they are excluded in the .gitignore so any
modifications in those should not be recorded by Git.

Signed-off-by: Steven Downer <grinch@outlook.com>