Use oneline 'if' on Robot#tick
Issue #9 - Draw a very simple gun
Add a small triangular base for radar
Merge pull request #20 from abinoam/pull1

Use oneline 'if' on Robot#tick
Merge pull request #21 from abinoam/issue9

Issue #9 - Draw a very simple gun
Fix test after f35df6f2983f05e7bca5d8f314e478d6ee850d72
Add possibility to modify radar view angle by Ai
Remove unnecessary `puts`
Add `time` to arena
Update Ai API
Add more example Ais
Upgrade ruby to 2.1.0
Disable Gui spec, because Ruby is crashing with it